TGL played for the first time on Monday night instead of Tuesday, and it allowed McIlroy, the No. 3 player in the world, time to get a decent night’s sleep—he lives five minutes from the SoFi Center—and then fly to the west coast for the $20 million signature event.

You can only imagine how the TGL technicians felt when Rory McIlroy walked into his 90-minute practice session last week with two launch monitors from his personal collection. The four-time major champion and TGL co-founder needed to put his concerns to rest before he debuted in the league: Is the simulator used for golf’s new indoor league accurate?

Rory McIlroy says his concerns about TGL's launch monitor not displaying correct information was put to bed after he tested two others before his debut.