Reliever Brian Fuentes was placed on Major League Baseball’s restricted list on Tuesday.

Fuentes requested a leave of absence due to personal reasons.

Per Jenifer Langosch of MLB.com:

According to a release distributed by the organization, Fuentes “informed the team that he needed to step away from the game due to personal reasons.”

No immediate indication was given as to how long Fuentes is expected to be away from the Cardinals.

Signed to a Minor League contract in mid-July, Fuentes joined the big league team on July 25 and has since made six appearances out of the bullpen. He allowed five earned runs on six hits and five walks in five innings.

Fuentes began the year with the A’s, who released the struggling veteran reliever in early July.

A little more than two weeks after his first Major League call-up, Rosenthal was sent out to Triple-A Memphis when the Cardinals acquired Edward Mujica at the Trade Deadline. Rosenthal was plugged into Memphis’ rotation, and the 22-year-old right-hander had made two starts since the demotion. In those 10 innings, Rosenthal gave up seven earned runs on nine hits.

Because Rosenthal last pitched on Aug. 8, he will be available out of the Cardinals’ bullpen immediately.

In his four previous appearances with the Major League club, Rosenthal allowed two runs on four hits in four innings. He struck out three and walked two.

Here’s hoping Fuentes isn’t away for too long and whatever the situation causing him to leave, improves.

Also, here’s to continued success at the Major League level for Rosenthal. After some of the bullpen issues this past week, his arm could prove quite beneficial!

Miranda Remaklus is lead St. Louis Cardinals contributor to Aaron Miles’ Fastball. She’s also lead writer at Aerys Offsides in the NFL section. Follow her on Twitter, @missmiranda.