What happened: Milwaukee Brewers third baseman David Hamilton left Monday's contest against the Cardinals due to left hamstring tightness. The injury occurred after he hit a two-run double to open the seventh inning, pulling up slightly as he reached second base before being replaced by Joey Ortiz.

Why it matters: Hamilton's departure is a concern for the NL Central-leading Brewers as the All-Star break approaches. The 28-year-old, who was acquired from the Boston Red Sox this offseason, provided a crucial offensive spark by scoring Garrett Mitchell and Sal Frelick before Brice Turang added a two-run single.

What to watch: The club will evaluate the severity of the ailment to determine his availability for the remainder of the first half.