On May 20, 2013 — Two of the best pitchers so far this season throw complete game three-hitters today. Clayton Kershaw of Los Angeles defeats Milwaukee, 3 – 1, a win that saves manager Don Mattingly’s job at least for now, as the Dodgers have been badly underperforming in spite of splurging on high-salaried players over the past 12 months. Matt Kemp hits his first homer in almost a month and Andre Ethier also homers and adds a triple, but is ejectedby umpire Dan Bellino for arguing a called third strike in the 8th inning. Patrick Corbin also pitches a gem in Coors Field, getting his first career complete game, as Arizona defeats the Rockies, 5 – 1. Corbin is now 7-0 with a 1.44 ERA, which only trails Kershaw’s 1.35 in the National League.

Source:
Baseball Reference May 20