Jannik Sinner is still regaining his focus on the tennis court after his three-month doping ban. The world No. 1 overcame a brief lapse during the first set of a 6-4, 6-2 victory over No. 93 Dutch qualifier Jesper De Jong in his second match back on tour in front of his home crowd at the Italian Open on Monday.

Tim Elko drilled a go-ahead, three-run home run in the sixth inning for his first career hit and Mike Vasil pitched effectively in relief to boost the Chicago White Sox to a 4-2 win against the visiting Miami Marlins on Sunday.

The men's world No. 1 missed several tournaments, but no Grand Slams. Here's what to know about the doping proceedings against him.