He went 0 for 1 with a groundout as a pinch - hitter in the 9th inning against the Milwaukee Brewers .
On April 22 , 2010 Diaz made his major league debut for the Pittsburgh Pirates , after his recall earlier in the day .
Diaz went 0 for 1 with a groundout as a pinch - hitter in the 9th inning against the Milwaukee Brewers .
On April 22 , 2010 Diaz made his major league debut for the Pittsburgh Pirates , after his recall earlier in the day .