According to ESPN.com, Hamilton asked for the day off.
Hamilton asked to be taken out of the lineup Sunday as well, saying he felt like he was "spinning my wheels," according to ESPN.com.
The Angels are in Boston for a four-game series against the Red Sox.
Hamilton signed a five-year, $133 million contract with Anaheim in 2013.
In 72 games this season, Hamilton is batting .266/.399/.414. He is hitting .132 over the past two weeks.
- Dan Gartland