Johnny Keefer is making quick strides in golf since graduating from Baylor 17 months ago. His final college tournament got him into the PGA Tour Americas. He moved up to the next level and led the Korn Ferry Tour. And now the 24-year-old starts out on the PGA Tour this week in Mexico on a sponsor exemption. It’s only his fifth PGA Tour start and he’s already on the cusp of earning a Masters invitation at just outside the top 50 in the world. There’s a mixed bag of results of players proving themselves in the big leagues.