Rizzo hasn't played since he went 0 for 5 in Thursday's 8-0 win at Milwaukee. The 28-year-old slugger is a key part of Chicago's lineup, hitting 32 homers and driving in 109 runs in each of the past two years.
''It stinks, especially not being able to play the home opener,'' Rizzo said before the Cubs' 8-5 loss to the Pirates. ''But it's a long season. It's a marathon. You got to stay smart and that's what we're doing.''
Rizzo said he is feeling better and hopes to be ready when he is eligible to come off the DL on Monday. The move was made retroactive to Friday.
''Usually, you know, if it's July, August, September, you mentally grind through it and as long as you can move you can play,'' he said. ''But this is one of those things where we talked and we don't want to, I don't want to be locked up the entire year. So hopefully we put a nip to it the next five days here and don't have to deal with this hopefully for the rest of my career.''
Infielder/outfielder Efren Navarro was promoted from Triple-A Iowa to take Rizzo's spot on the roster. He pinch-hit in the fifth against Pittsburgh and reached on an infield single.
Ben Zobrist started at first for the home opener and went 0 for 5 in the loss.
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