Tampa Bay Rays third baseman Matt Duffy (hamstring) played two rehab games over the weekend and is doing strengthening drills with the Rays this week. He expects to start playing in rehab games again shortly. "I tried as hard as I could (Tuesday) to make it hurt and it went really well," Duffy said. "Thats a good thing." Duffy has been out all season long but hit an impressive .294/.361/.366 last season, albeit with only four home runs and 44 RBI in 132 games. [...]