ST. PETERSBURG -- Twins switch-hitter Robbie Grossman was in the lineup Tuesday after being reinstated from the 10-day disabled list. Although he will be limited to batting from the left side over the next few games, he made a big splash in his return.

Grossman led off the ninth inning of the 2-1 loss to the Rays with a solo shot off Rays closer Alex Colome that ended up in the Rays' Touch Tank in right-center field. It was only the sixth home run to reach the tank -- full of live cownose rays and open to the public -- since it opened in 2006.

"He made a mistake over the middle of the plate and luckily I put a good swing on it," Grossman said.

Grossman, who missed the past 18 games with a fractured left thumb, is batting .244 with eight home runs and 36 RBIs in 99 games. His return should provide an offensive spark with third baseman Miguel Sano's continued absence. Sano, who is dealing with a left shin injury, only resumed baseball activities on Monday and his timetable for a return has not been announced.

The club also selected the contract of right-handed pitcher Michael Tonkin and recalled right-hander J.T. Chargois from Triple-A Rochester on Tuesday.

"He went down there and did his work," Molitor said. "I told him today that I wasn't sure how much he'll get to pitch but he deserves to be back here, so I'm happy he'll have that opportunity."

Chargois, who has missed most of the year with a right elbow impingement, will be transferred to the 60-day DL to make room for Tonkin on the 40-man roster.

"With the people we have pitching I feel fairly good about it, to be honest, but you can never have enough pitching in these late-season games because there is always the unknown," Molitor said.

Adalberto Mejia will have his rehab assignment transferred from Rochester to Double-A Chattanooga, the club also announced. He has missed the past 25 games with a left arm brachialis strain.

Molitor said the decision was made to give Mejia an additional start in order to get him up to 100 pitches for a possible return to the rotation.

"I wouldn't want to use him out of the bullpen right now," Molitor said.

The club also announced it reinstated left-handed pitcher Dietrich Enns from the 10-day disabled list and optioned him to Chattanooga. Enns missed the past 20 games with a left shoulder strain. He allowed one run in 5 2/3 innings over two games during a rehab assignment with Rochester.