Once Nelson exited the game, left-hander Brent Leach threw two perfect innings to complete the two-hit shutout.
With his sterling start Monday, Nelson lowered his ERA to 1.80. In 25 innings this season, he has struck out 24 batters and walked seven.
Adam McCalvy is a reporter for MLB.com. Read his blog, Brew Beat, and follow him on Twitter at @AdamMcCalvy. This story was not subject to the approval of Major League Baseball or its clubs.