BUFFALO, N.Y. -- The pain in Devon Travis's non-throwing shoulder has snuck up on him again.

Travis, the Toronto Blue Jays second baseman recovering from an injury to his left shoulder, was slated to play in three minor-league rehabilitation games for the Buffalo Bisons before joining the major-league club in Washington.

Instead, he saw action as a designated hitter Friday night and was a late scratch before Saturday's game. Shortly after Sunday's contest against the Rochester Red Wings was postponed due to rain, Travis said he's being shut down for at least another week and will be travelling to the Blue Jays' training facility in Dunedin, Fla., for more treatment.

"After the game the other day, I felt great," Travis said on Sunday. "I came into the locker-room, did an interview, felt fine, went to take my shirt off and my adrenaline wore off a bit. It began barking on me a little bit again."

It's a big setback for the 24-year old rookie who batted .271 with seven home runs and 26 runs batted in before landing on the disabled list on May 17.

"I don't know the best way to explain it. I was having the time of my life," said Travis, who made Toronto's major league roster without ever playing at the triple-A level. "Obviously, injuries are part of the game. Being a young guy, it's tough to figure out. I'm living my dream and then get hit in the collar-bone with a ball.

"The next thing you know, you're finding yourself a month later still fighting to do the same stuff."

May was a very disappointing month for Travis, who was named the American League Rookie of the Month for April. After Friday night, he was unable to even swing in a practice cage or take batting practice.

"It's unfortunate and frustrating," he said. "Walking around, no one would know anything's bothering me. It's the playing part that gets me.

"I have to play the hand I'm dealt and make the most out of it."

With his rehab assignment being called off, Travis will not be able to participate in any baseball activity for seven days.

"I can't wait to get back out there," he said. "I'm dying. I haven't been sleeping much. I'll be back as soon as I can."

Meanwhile, catcher Dioner Navarro, is planning to join the Blue Jays in Washington, D.C. He played in five games with the Bisons since last Tuesday and batted .286 (4-for-14) with a homer and four RBIs.

Navarro played in eight games with Toronto and batted .267 before landing on the disabled list on April 22 with a left hamstring injury.

"I'm ready now," Navarro said. "One of the biggest things was to catch nine innings, and I did that yesterday. I tagged up on a fly ball to right field from second (on Friday). I wanted to test the hamstring and everything worked out fine. I'm pleased with the progress."

Another player battling back from a spring training injury, veteran infielder Ramon Santiago, was activated from Buffalo's disabled list and was scheduled to start on Sunday.

Santiago suffered a broken collar-bone in a March 15 game against Atlanta and was released on March 30. He signed a minor league contract with Toronto a week later and had spent the entire season thus far on the Bisons' disabled list.