Friday, April 18, 2014

Ping S55 vs. Ping i25 Irons

Here's a video from European professional, Mark Crossfield, showing the differences between Ping's S55 and i25 iron models.

I plan on trying both of these model of irons from Ping sometime this year as I am interested in irons with more of a bounce angle as the Florida turf does not interact that well with low bounce angle clubs.

While I have traditionally favored a blade design, I feel that today's irons there is not a lot of difference in the MOI around the sweetspot in irons outside of the 'game improvement' models. I don't need a lot of forgiveness with irons, particularly since I utilize MOI matching. But, what tends to be more important (IMO) is the CoG placement. Crossfield's video shows the importance here as he is obviously a low handicapper with a good swing. That would make one think that he is best suited for the S55, but the i25 model ends up being the better fit.


Thursday, April 17, 2014

Rate of Closure and Spin Axis

One of the things that had been discussed over a year ago was the effect that Rate of Closure will have on tilting golf ball’s axis. This was actually asked by Erik Barzeski and Dave Wedzik from Golf Evolution ( and later confirmed by Fredrik Tuxen of Trackman. I didn’t quite understand it at first and neglected up until a few months ago.

First, let’s briefly go over some of the main terms for those that don’t understand what we are talking about.

Rate of Closure is the amount the club face is closing thru the ‘impact interval.’ The impact interval is the time the clubface makes initial contact with the ball, then compresses the ball and then the ball ‘leaves’ the clubface. The more the clubface closes, the ‘higher’ the rate of closure.

Here is the ‘spin axis’ of a golf ball.

You will hear some Trackman fans eschew the word ‘side spin’ because they feel the term indicates that a golf ball can spin two different ways (backspin and side spin). The golf ball has an axis that it spins on. So the Trackman people tend to prefer the ‘tilting of the spin axis.’ Other launch monitor companies will use ‘side spin’ understanding that the ball has an axis and doesn’t spin in two different directions. But, they are essentially figuring out where the axis is tilted and how much the ball is spinning in the direction the axis is tilted creating ‘side spin.’ It’s more or less semantics although I tend to prefer Trackman’s spin axis terminology.

The idea initially before Golf Evolution asked Tuxen the question was that the higher the rate of the closure, the more it would tilt the spin axis in a hook shot direction. And the slower the rate of closure, it would produce more of a slice spin tilt of the ball’s axis.

The idea is that using the D-Plane, where the ball curves based on the path’s relation to the face. So if the golfer had a high rate of closure, the clubface would start closing with relation to the path.

But, with gear effect the Golf Evolution guys felt that the opposite would be true and the ball’s spin axis would actually tilt towards a slice.

First, think of the ball and club face as 2 gears (hence the name, gear effect)

Here is another example illustrating the point:

So…for every action, there is an equal but opposite reaction.

What does that mean here?
So…for every action, there is an equal but opposite reaction.

What does that mean here?

As the clubface is rotating in a counter-clockwise direction (high rate of closure), the ball is going to rotate in a clockwise direction.

Where I have my skepticism is in the assumption that a slow rate of closure will ‘produce more hooks.’ Mainly because with a slower rate of closure, the clubface is still closing. For it to produce more hooks based on what I have shown above, the clubface would have to be moving in a clockwise direction to get the ball to move in a counter clockwise direction. But, at least we can understand the theory behind a higher rate of closure producing more slices.


Tuesday, April 15, 2014

3Jack Golf's PGA Tour Rundown - Week 16

Here are how my picks at the Masters finished:

Rory McIlroy (9/1) t-8th
Adam Scott (9/1) t-14th
Phil Mickelson (11/1) MC
Jason Day (14/1) t-20th
Matt Kuchar (20/1) t-5th
Bubba Watson (25/1) - 1st
Justin Rose (28/1) t-14th
Brandt Snedeker (33/1) t-37th
Keegan Bradley (33/1) MC

Value Pick: Marc Leishman (100/1) MC

Here are my picks for Harbour Town:

Matt Kuchar 16/1
Zach Johnson 22/1
Graeme McDowell 25/1
Hunter Mahan 35/1
Kevin Stadler 50/1
Russell Knox 80/1
Justin Hicks 100/1
Kevin Chappell 100/1
Roberto Castro 200/1

Value Pick: Jason Bohn 200/1

Here are my latest season-to-date rankings:


1. Bubba Watson
2. Kevin Stadler
3. Kevin Streelman
4. Hunter Mahan
5. Hideki Matsuyama
6. Justin Hicks
7. Billy Horschel
8. Ryan Moore
9. David Toms
10. Derek Ernst

171. Charlie Wi
172. Ernie Els
173. Retief Goosen
174. Seung-Yul Noh
175. Aaron Baddeley
176. Chad Collins
177. Alex Aragon
178. Bud Cauley
179. Mike Weir
180. Tyrone Van Aswegen


1. Ryo Ishikawa
2. Marc Leishman
3. Brian Stuard
4. Chesson Hadley
5. Hideki Matsuyama
6. Michael Putnam
7. Jim Furyk
8. Tim Clark
9. Zach Johnson
10. Vijay Singh

171. Patrick Reed
172. Ernie Els
173. Richard Lee
174. Scott Brown
175. Aaron Baddeley
176. Tommy Gainey
177. Jhonnattan Vegas
178. Derek Ernst
179. Graeme McDowell
180. Wes Roach


1. Victor Dubuisson
2. K.J. Choi
3. Peter Malnati
4. Marc Leishman
5. Graeme McDowell
6. Dustin Johnson
7. Hideki Matsuyama
8. Ken Duke
9. Lee Williams
10. Nick Watney

171. Edward Loar
172. Johnson Wagner
173. Patrick Reed
174. Chad Campbell
175. Kevin Tway
176. Troy Matteson
177. Jhonnattan Vegas
178. Andrew Loupe
179. D.A. Points
180. Ben Curtis

RED ZONE (175-225 YARDS)

1. Sergio Garcia
2. Chad Campbell
3. Brooks Koepka
4. Graham DeLaet
5. Matt Every
6. Kyle Stanley
7. Robert Streb
8. Kevin Stadler
9. Stewart Cink
10. Heath Slocum

171. Greg Chalmers
172. Peter Malnati
173. James Driscoll
174. Tim Wilkinson
175. John Rollins
176. Justin Leonard
177. Bronson La'Cassie
178. Ben Curtis
179. Richard Lee
180. Bud Cauley


1. Jason Dufner
2. Zach Johnson
3. Lee Westwood
4. Bud Cauley
5. John Mallinger
6. Robert Streb
7. Tim Clark
8. Rickie Fowler
9. Kevin Na
10. Keegan Bradley

171. Troy Merritt
172. Andrew Svoboda
173. Alex Aragon
174. Jason Bohn
175. Chad Campbell
176. Tommy Gainey
177. Graeme McDowell
178. Bronson La'Cassie
179. J.J. Henry
180. Hudson Swafford



Wednesday, April 2, 2014

3Jack Golf's PGA Tour Rundown - Week 14

Steven Bowditch wins the Valero Texas Open:

Here are how my Valero picks finished:

Ryan Moore: 16/1 (DNP)
Phil Mickelson: 16/1 (WD)
Zach Johnson: 16/1 (t-6th)
Jim Furyk: 25/1 (t-6th)
Charley Hoffman: 25/1 (t-11th)
Kevin Chappell: 50/1 (MC)
K.J. Choi: 50/1 (MC)
Russell Knox: 66/1 (t-26th)
Justin Hicks 200/1 (15th)

Value Pick: Lee Williams 300/1 (MC)

Here are my picks for Houston:

Dustin Johnson: 14/1
Graham DeLaet: 25/1
Ian Poulter: 50/1
Jason Kokrak: 50/1
Kevin Streelman: 80/1
Daniel Summerhays: 80/1
Brian Harman: 100/1
Robert Garrigus: 100/1
Stewart Cink: 125/1

Value Pick: Tim Clark: 200/1


1. Bubba Watson
2.Kevin Streelman
3. Fred Funk
4. Hunter Mahan
5. Kevin Stadler
6.Hideki Matsuyama
7. Justin Hicks
8. Billy Horschel
9. Ryan Moore
10. Derek Ernst

172. Aaron Baddeley
173. Andres Romero
174. Seung-Yul Noh
175. Retief Goosen
176. Ernie Els
177. Alex Aragon
178. Chad Collins
179. Bud Cauley
180. Tyrone Van Aswegen
181. Mike Weir


1. Ryo Ishikawa
2. Marc Leishman
3. Chesson Hadley
4. Tim Clark
5. Brian Stuard
6. Hideki Matsuyama
7. Jim Furyk
8. Michael Putnam
9. Harrison Frazar
10. John Rollins

172. Michael Thompson
173. Ricky Barnes
174. Richard Lee
175. Aaron Baddeley
176. Ernie Els
177. Jhonnattan Vegas
178. Derek Ernst
179. Tommy Gainey
180. Graeme McDowell
181. Wes Roach


1. Victor Dubuisson
2. K.J. Choi
3. Peter Malnati
4. Marc Leishman
5. Dustin Johnson
6. Graeme McDowell
7. Rickie Fowler
8. Hideki Matsuyama
9. Ken Duke
10. Lee Williams

172. Edward Loar
173. Patrick Reed
174. Chad Campbell
175. Kevin Tway
176. Jhonnattan Vegas
177. Troy Matteson
178. Jonathan Byrd
179. Andrew Loupe
180. D.A. Points
181. Ben Curtis

RED ZONE (175-225 YARDS)

1. Chad Campbell
2. Kyle Stanley
3. Brooks Koepka
4. Matt Every
5. Heath Slocum
6. Kevin Streelman
7. Kevin Stadler
8. Graham DeLaet
9. Robert Streb
10. Billy Horschel

172. James Driscoll
173. Peter Malnati
174. Max Homa
175. John Huh
176. Tim Wilkinson
177. Bronson La'Cassie
178. John Mallinger
179. Richard Lee
180. Ben Curtis
181. Bud Cauley


1. Zach Johnson
2. Jason Dufner
3. Bud Cauley
4. John Mallinger
5. Ian Poulter
6. Tim Clark
7. Lee Westwood
8. Robert Streb
9. George McNeill
10. Kevin Na

172. Jason Bohn
173. Boo Weekley
174. Andrew Svoboda
175. Tommy Gainey
176. Troy Merritt
177. Alex Aragon
178. Graeme McDowell
179. Bronson La'Cassie
180. Hudson Swafford
181. J.J. Henry


Thursday, March 27, 2014

Elk Working on his 2014 Equipment

Here's a video from Steve Elkington going over him working on equipment.


Wednesday, March 26, 2014

A Statistical Look at Matt Every's Decision at Bay Hill

This past Sunday we had this infamous exchange heard on NBC between Matt Every and his caddie about what decision to make (NSFW).

Every was stuck in a precarious position on the 16th hole. He had a tree partially blocking his shot and there is water in front of the green. Here’s a diagram of the 16th hole at Bay Hill:

Every is one of the most aggressive players on Tour. Last year he ranked 13th in my Tee Shot Aggressiveness ranking which measures the projected amount of times the golfer lays up off the tee on par-4’s and par-5’s. He was also 3rd in Par-5 aggressiveness which measures the percentage of times the golfer Goes for the Green in 2 shots compared to their distance off the tee.

Generally, the numbers work in the player’s favor to be aggressive off the tee (from a driver vs. lay-up perspective ONLY) and on the par-5’s. And I could see Every’s thinking about going for it here as the 16th hole is a birdie hole that played to only a 4.425 scoring average this past week. So the idea of not getting the ball on the green and not making par could be a 2-stroke swing.

However, the bigger issue for Every is that since he was hitting his 3rd shot here, a shot in the water would provide larger damage to his chances of winning. That’s the thing about being aggressive in going for the green on par-5’s (and even on the tee on some short par-4’s); if you end up in the water you can still drop and save the par. But in Every’s situation if he goes in the water par is completely out of play and now he is looking more at making a double bogey.

Every’s caddie states that if they just lay-up and put it in the fairway they will ‘get up-and-down 75% of the time.’ Well, let’s take a look at the numbers on that.

Every decided to punch out and hit his shot to 89 yards in the fairway.

Here’s a look at Every’s numbers for the year:

On shots from 75-100 yards from the fairway: 17’0” Avg. Proximity to the Cup.

Total Putting from 15-20 feet: 32.39%

However, we have to remember that was for a par putt. And Tour players typically make a higher percentage of par putts than birdie putts.

So far this year, Every is 5 for 12 (41.7%) from 15-20 feet on par & bogey putts.

Therefore, the reality is that his odds of getting up and down were at 41.7% instead of 75% given the shot he had hit. Unfortunately it was all taken out of play when he hit that 89 yard shot from the fairway to 25 feet which greatly reduced his odds.

In the end, Every I feel that the data supports Every’s decision to lay-up, regardless of Every going on to victory. Making double bogey on a hole where the majority of golfers made birdie or eagle would have greatly hurt his odds of winning. And since he had made 42% of his par/bogey putts from 15-20 feet for the year, he had more than a puncher’s chance of getting up-and-down by putting the ball in the fairway from 75-100 yards.

This is a typical risk vs. reward strategy in golf. Every and his caddie had the risk and reward percentages skewed and were inaccurate when it comes to the actual probabilities. However, they understood what double bogey meant on a hole where golfers were likely to score low.


Tuesday, March 25, 2014

3Jack Golf's 2014 PGA Tour Rundown - Week 13

Matt Every wins at Bay Hill:

Here is how my picks for Bay Hill finished:

Here are my picks for Bay Hill

Justin Rose: 14/1 (MC)
Bubba Watson: 14/1 (WD)
Zach Johnson: 22/1 (t-43rd)
Keegan Bradley: 28/1 (2nd)
Harris English: 33/1 (t-14th)
Ian Poulter: 66/1 (t-20th)
Russell Knox: 80/1 (t-43rd)
Billy Horschel: 100/1 (t-43rd)
Brendan Steele: 100/1 (t-20th)

Value Pick: John Merrick 200/1 t-43rd

Here are my picks for the Valero Texas Open:

Ryan Moore: 16/1
Phil Mickelson: 16/1
Zach Johnson: 16/1
Jim Furyk: 25/1
Charley Hoffman: 25/1
Kevin Chappell: 50/1
K.J. Choi: 50/1
Russell Knox: 66/1
Justin Hicks 200/1

Value Pick: Lee Williams 300/1

Here are the updated rankings. I have changed the names of the Zones to the following:

Green Zone (75-125 yards)
Yellow Zone (125-175 yards)
Red Zone (175-225 yards)


1. Bubba Watson
2. Kevin Streelman
3. Hunter Mahan
4. Kevin Stadler
5. Hideki Matsuyama
6. Justin Hicks
7. Ryan Moore
8. Billy Horschel
9. Heath Slocum
10. David Toms

168. Johnson Wagner
169. Jamie Lovemark
170. Seung-Yul Noh
171. Retief Goosen
172. Andres Romero
173. Aaron Baddeley
174. Tyrone Van Aswegen
175. Chad Collins
176. Bud Cauley
177. Mike Weir


1. Ryo Ishikawa
2. Marc Leishman
3. Jim Furyk
4. Tim Clark
5. Brian Stuard
6. Chesson Hadley
7. Michael Putnam
8. Hideki Matsuyama
9. John Rollins
10. Vijay Singh

168. Morgan Hoffmann
169. Brendon de Jonge
170. Richard Lee
171. Jhonattan Vegas
172. Derek Ernst
173. Ernie Els
174. Tommy Gainey
175. Aaron Baddeley
176. Graeme McDowell
177. Wes Roach


1. Victor Dubuisson
2. Peter Malnati
3. K.J. Choi
4. Marc Leishman
5. Dustin Johnson
6. Lee Williams
7. Graeme McDowell
8. Rickie Fowler
9. Hideki Matsuyama
10. Jim Furyk

168. Johnson Wagner
169. Edward Loar
170. Patrick Reed
171. Chad Campbell
172. Jonathan Byrd
173. Jhonattan Vegas
174. Kevin Tway
175. Troy Matteson
176. D.A. Points
177. Ben Curtis

RED ZONE (175-225 YARDS)

1. Chad Campbell
2. Kyle Stanley
3. Brooks Koepka
4. Robert Streb
5. Heath Slocum
6. Jordan Spieth
7. Matt Every
8. Brendan Steele
9. Kevin Streelman
10. Brad Fritsch

168. John Rollins
169. James Driscoll
170. Max Homa
171. John Huh
172. Justin Leonard
173. Greg Chalmers
174. Ben Curtis
175. Richard Lee
176. Peter Malnati
177. Bud Cauley


1. Bud Cauley
2. Zach Johnson
3. Jason Dufner
4. Justin Rose
5. Ian Poulter
6. Tim Clark
7. Robert Streb
8. Lee Westwood
9. George McNeill
10. Bryce Molder

168. Troy Merritt
169. Greg Chalmers
170. Jamie Lovemark
171. Scott Gardiner
172. Tommy Gainey
173. John Peterson
174. Graeme McDowell
175. Andrew Svoboda
176. Hudson Swafford
177. J.J. Henry