That was fun. Through 55 holes, it looked like Brooks Koepka was ready to return from injury and establish his dominance with three wins in four years at the PGA Championship. Instead, his putter went dead cold and Phil Mickelson did the improbable.

Despite having poor form in recent weeks, Mickelson felt like he was on the verge of a breakthrough. He spent much of his recent practice working on focus. Staying present in the moment. In the end, golf is a mental game where a single uncommitted swing or distraction can lead to disaster and cost a tournament. There is no doubting Mickelson’s tremendous talent, but he is notorious for losing focus at the worst possible moment. Not this time. Between his practice and timely advice from his brother and caddie, he was able to remain dialed in down the stretch and outlast a star-studded leaderboard to win the PGA Championship at 50 years old. Incredible.

So, how did he do it? Well first, he hit bombs.

Mickelson has been all over social media discussing his “hellacious seeds” and “bombs.” Over the past several years, he put in a tremendous amount of work to go from average in terms of swing speed on the PGA Tour to fast. All of this at 50 years old. While this has separated him from fields on the Champions Tour, it has been difficult for Mickelson to keep it in play on the PGA Tour. Not this week. Mickelson may have only finished 29th in terms of strokes gained: driving this week, but he kept the ball in play and gave himself chances to hit the green. On a difficult, windy Ocean Course at Kiawah Island, that is more than many can say. In fact, he hit the longest drive of the day on hole 16 on Sunday. Take that Bryson. Using V1 Game’s driving distance analysis, Mickelson averaged over 300 yards across all drives for the week. This allowed him to dismantle the par 5s, which were critical to getting his overall score under par.

Mickelson did most of his damage on the front nine and in particular, holes two and seven above where he was 7 under for the week. V1 Game’s Hole History view gives a Shotlink-like view of how he played the two holes. Long drives in the fairway allowed him to be aggressive into the greens with easy chips or two-putt birdies. At a course as difficult as Kiawah, you have to birdie the holes you’re supposed to to give room for mistakes on the more difficult holes. Typically, the winner of each PGA Tour event makes very few mistakes. However, at Kiawah, mistakes were unavoidable. Between narrow fairways, wind, and difficult conditions, the week was more like a U.S. Open than a PGA Championship. Mickelson made mistakes, but he was able to minimize them with his amazing short game and tremendous lag putting.

The Virtual Coach in V1 Game details the mistakes Mickelson made throughout the week. Despite playing well all week, when the pressure was ratcheted up on Sunday there were more mistakes. Still, Mickelson did a great job of turning doubles into bogeys to minimize the damage. He was off to a shaky start on Sunday. He 3-putted the first hole and took 4 to get down from just 36 yards on the third hole. Around that time, his brother Tim told him to start committing to shots if he wanted to win. Mickelson was able to do that and didn’t make another mistake until the 13th hole by which time he had a five-stroke lead. Sometimes golf is a game of survival.

Not enough will be said about Mickelson’s putting this week. Phil is notorious for struggling with the short ones in pressure situations, and one observation from tracking his rounds — his lag putting was phenomenal. He consistently left himself inside two feet for his clean-up. This takes a tremendous amount of pressure off the putter when nerves are at an all-time high. This may not show up from a strokes gained perspective where you are rewarded for making longer putts, but not missing short ones is important as this was the downfall of both Louis Oosthuizen and Koepka. Mickelson may have finished 37th in strokes gained: putting for the week, but he made it easy for himself on the greens. So, if he finished in the 30s for driving and putting, how did he win the golf tournament?

If Mickelson is known for anything, it’s his prolific short game. He certainly shined when it mattered, gaining strokes on all four days around the green. He finished 18th for the week in strokes gained: short and made critical up and down time and again to minimize big numbers and save par. However, Mickelson truly separated himself with his strokes gained: approach gaining 4.4 strokes on the field with his irons and finishing fifth in the field. Add it all up and Phil is the winner in strokes gained: total and gets the Wanamaker.

It was a brilliant display of golf and focus. The scene at 18 was incredible as the crowd chanted “Lefty” and circled the green to watch the historic moment as the oldest man to ever win a major championship tapped in the final putt. Mickelson was focused. Golf is a mental game after all. The golf course was difficult and he played it better than anyone else.

Mickelson knew what he needed to work on these last several years to stay at the top of the game and has been able to do it through not just working on speed and hitting bombs, but improving his mental game along the way. V1 Game can help you understand what you need to work on to get better at any age and any skill level. Mickelson’s performance was inspiring as is his desire to use every tool available to get better. It was interesting late on Saturday to listen to both Oosthuizen and Koepka discuss their play. Louis was frustrated with his ballstriking, despite leading the field on Saturday in strokes gained: tee to green. It was his putter that was letting him down. Koepka complained about his putting after a late short miss when his iron play was below average for him. Even the best in the game can be confused on which area of their game is impacting their score. Strokes gained and V1 Game take the mystery out of game improvement. Whether you’re a young gun or closer to the Champions Tour, advanced analysis from V1 Game can get you following in Mickelson’s footsteps. What a great game golf is.