Given the number of players who have already been recalled and the hope that a few injured big leaguers will return this month, the Orioles didn't recall a wave of minor leaguers Thursday when rosters expanded.

Calling it a trickle would be generous.

The Orioles purchased the contracts of right-hander Rick VandenHurk and outfielder Kyle Hudson from Triple-A Norfolk on Thursday, a day after promoting lefty Zach Phillips. There were no other moves announced, although manager Buck Showalter said one more might happen soon.

Another group of players from Norfolk likely will be recalled after the Tides' season ends Monday. The club has not ruled out summoning players next week from Double-A Bowie, which is in the Eastern League playoff hunt.

Showalter said the health of infielders Cesar Izturis (left groin) and Chris Davis (right shoulder) would determine whether more players will be needed in the big leagues for the final month.

"We'll see if we're going to be able to add Chris and Izzy," Showalter said. "If not, we'll probably add some other position players. We're trying to make sure [Tides manager Gary Allenson] can get nine guys on the field down there, too."

Hudson, 24, began the season at High-A Frederick and moved up to Bowie, then Norfolk. With the Tides, he was hitting .297 with 26 stolen bases in 68 games. The former Illinois wide receiver and a 2008 fourth-round draft pick by the Orioles, Hudson will be making his major league debut.

"I was pretty excited, pretty shocked," Hudson said. "I felt like I've done a pretty good job this season, but I never really thought, starting the season at Frederick, that I'd be here. I've come a long way. I'm happy to be here."

Normally a center fielder, the speedy Hudson will serve a similar role to Matt Angle's, subbing in the outfield and pinch-running. He potentially could get some starts in place of Nolan Reimold in left.

"Kyle obviously runs real well, so we'll see," Showalter said. "It's his first time here, and we'll see how it fits as we go."

VandenHurk, 26, was taken off the 40-man roster in March but cleared waivers and remained in the organization. He was 9-13 with a 4.43 ERA in 26 starts this year for the Tides after pitching in seven games with the Orioles in 2010.

"This is the first year I've stayed in one place for the whole season, and I think it was really, really good for me," said VandenHurk, who will be used as a reliever and threw 11/3 scoreless innings Thursday in his first major league appearance in almost a year. "I learned a lot from [the minors] and took a lot of it. I'm very happy, and to get called up, that's just icing on the cake right now."

Grand Prix gridlock

The Orioles-Blue Jays game was moved up to 12:35 p.m. Thursday to prepare for this weekend's Baltimore Grand Prix downtown, but it didn't help with the traffic gridlock that made it extremely difficult to get to Camden Yards.

Ninety minutes before game time, Showalter said at least three of his players had called and were stuck in traffic. Showalter left early in the morning from his home in northern Baltimore County, and it still took him 75 minutes to get to the park.

"And I thought I was leaving way early. I'm still not real sure how I got here," Showalter said before pausing. "It's a great event for Baltimore. Sorry I'm going to miss it."

In anticipation of the problems, Thursday's starter, Tommy Hunter, stayed overnight in a downtown hotel.

Orioles claim Strop

The Orioles claimed right-handed reliever Pedro Strop off waivers from the Texas Rangers. He will join the club in St. Petersburg, Fla., on Friday.