ST. PETERSBURG, Fla. -- The slumping Tampa Bay Rays have turned to a Seminole medicine man to change their fortunes.

Tampa Bay manager Joe Maddon invited 77-year-old tribal elder Bobby Henry to Tropicana Field on Monday in an attempt to help his team, which has the worst record in the majors.

"We just turned him loose on the Trop," Maddon said.

Maddon talked about Henry's "supernatural powers," specifically when it comes to making it rain.

"If it rains in the Trop, I'll be really impressed. That will be his best moment ever," he told reporters.

While it didn't rain inside, a heavy downpour began outside Tropicana Field after Henry's visit, which was noted by the team on its Twitter account.

.@RaysJoeMaddon said he'd be really impressed if Medicine Man could make it rain inside Trop. #Rays first AB and it starts pouring outside. - Tampa Bay Rays (@RaysBaseball) June 9, 2014

Henry's visit didn't help the Rays on Monday as Tampa Bay fell to the Seattle Mariners 3-0, the second straight game the team has been shut out.

The Rays have lost 13 of 14 and are saddled with the worst record in the major leagues at 24-41. The last time they were 17 games under .500 was the end of 2007, the final year they were known as the Devil Rays.

Before Monday's game, Henry walked around the ballpark and said the Rays are ready "to go get it."

Maddon has tried a variety of things over the years to liven up his team. He has brought a python, penguins and a magician into the clubhouse in the past.

The Associated Press contributed to this report.