The pair locked horns on Twitter over greens books, with Donald saying that they should be banned
It was unveiled last week at the Northern Trust on the PGA Tour and will make its European Tour debut at Wentworth next month
Lefty says that the books allow him to do "80%" of his green reading before he even gets to the putting surface
The pair split after Wallace phoned McNeilly up four days after their T27th finish at the WGC in Memphis
The pair have worked together for six weeks but are parting due to a "disconnect of old school and new school"
The Golfing Scientist says he wants to be part of the solution to slow play, not the problem
Catriona Matthew's team is finalised after the four wildcards were announced
The Englishman has apologised to the Golfing Scientist for calling him a "twit"
The pair had a chat before the final round of the Northern Trust after comments were made regarding DeChambeau's slow play
The viral video of Bryson DeChambeau taking over 2 minutes to hit a putt could lead to a change in the PGA Tour's slow play policy
The 15-time Major winner is out after round one with an oblique strain
The four-time Major winner is focusing more on the PGA Tour this year...
The 1992 Masters champion was speaking to GM's Sam Tremlett for the Golf Monthly Clubhouse Podcast
The Dane will appear in court later this month with charges including sexual assault
The World Number One leads the FedEx Cup standings ahead of the Playoffs where the winner will pocket $15m
The four-time Major winner wants shot penalties for players who record bad times after being put on the clock
Ko's former coach Leadbetter says she should take a break from the game after slipping down the rankings
From next year, US Amateur champions won't forfeit their US Open spot if they turn professional
The German did not progress to the FedEx Cup Playoffs after ending the regular season 150th in the standings
The American shot 62 in the final round to win his maiden PGA Tour title