The best facts and figures from the opening round of the WGC-Mexico Championship.
64 -Louis Oosthuizen leads in Mexico City after a first round of 64.
9 -The South African's round is nine shots better than his opening round at Club de Golf Chapultepec last season.
65- Chris Paisley opened with a 65 on his World Golf Championships debut.
67.7- Paisley's stroke average this calendar year is 67.7, thanks to 14 out of 17 sub-70 rounds.
100- Tony Finau holed out from 100 yards on the 625-yard par five sixth.
6- There are six men making their World Golf Championships debut this week - Paisley, Abraham Ancer, Jorge Campillo, Dylan Frittelli, Wade Ormsby and Shubhankar Sharma.
46- World Number One Dustin Johnson is among 46 of the World's Top 50 in the field this week.
64- The late withdrawal of American Chan Kim due to a wrist injury means there are 64 players in action.
12- When play was suspended due to the threat of lightning, there were still 12 players out on the course.
