DETROIT -- Catcher Matt Treanor is back with the Texas Rangers.

Treanor, traded by the Rangers to the Royals for cash considerations at the end of Spring Training, was dealt back to the Rangers on Wednesday, also for cash. The deal leaves one opening on the Royals' 40-man roster.

Treanor has been on an injury rehabilitation assignment with Double-A Northwest Arkansas, the result of sustaining a concussion in a home-plate collision at Cleveland on July 30.

"He really gave us stability behind the plate," Royals manager Ned Yost said. "In Spring Training, we were trying to get through it with two young guys [Brayan Pena and Lucas May], and we saw that wasn't going to work. He came in and gave us veteran leadership, and a veteran presence behind the plate. He was fantastic."

The Rangers had to obtain Treanor by Wednesday in order for him to be eligible for postseason play.

Treanor played in 65 games for the Royals and batted .226 with three homers and 21 RBIs. He was on the Rangers' World Series team last season, batting .211 in 82 games. He played in four postseason games for Texas.

Previously, Treanor spent five years with the Florida Marlins and one year with the Detroit Tigers, missing most of the 2009 season with a hip injury.

Royals call up reliever Chavez from Triple-A

DETROIT -- Right-hander Jesse Chavez has become the first September callup summoned by the Royals.

Called up Wednesday night, Chavez will join the club for Thursday afternoon's game in Detroit from Triple-A Omaha. For the Storm Chasers, he had a 2-4 record, 16 saves and a 3.75 ERA in 45 relief appearances.

He was with the Royals briefly this season, appearing in one game against Minnesota and giving up two runs on three hits in one inning.

Acquired on July 31, 2010, from the Atlanta Braves in the deal that also landed Kansas City left-hander Tim Collins and outfielder Gregor Blanco for pitcher Kyle Farnsworth and outfielder Rick Ankiel, Chavez was 2-3 with a 5.88 ERA in 23 games for the Royals last season.

Butler ranks among the Majors' top hitters

DETROIT -- Billy Butler has joined an elite group of the Major Leagues' top hitters.

Since the 2009 season, the Royals' designated hitter is one of seven players to have more than 500 hits, 200 runs, 50 homers and an average over .300, according to STATS, LLC.

The others: Miguel Cabrera, Tigers; Robinson Cano, Yankees; Ryan Braun, Brewers; Michael Young, Rangers; Albert Pujols, Cardinals; and Adrian Gonzalez, Red Sox.

Prior to Wednesday's game, Butler had 519 hits, 217 runs, 52 homers and a .306 average since the beginning of the '09 season.

Moustakas continues hit parade in loss

DETROIT -- Third baseman Mike Moustakas, with a second-inning double, extended his hitting streak to 14 games in Wednesday's 5-4 loss to the Tigers.

That represents quite a change for Moustakas, who had struggled through much of his rookie season. Example: In his previous 14 games, he'd hit safely in just five.

Moustakas' streak is the second longest for a rookie in Royals history. Outfielder David DeJesus had two 15-game streaks in his rookie season of 2004.

Moustakas' average hit a season low of .182 immediately before the streak began. Now, his streak, in which he's hit .423 (22-for-52), has his average up to .232.

"The streak's nice and all, but I'd still rather be winning ballgames," Moustakas said. "I wish I could be getting them with runners in scoring position. The hits are hits, but we've got to find out ways to win."

He was 1-for-4 in Wednesday's loss.

Omaha's Mendoza tabbed top PCL pitcher

DETROIT -- Right-hander Luis Mendoza of the Triple-A Omaha Storm Chasers has been named Pacific Coast League Pitcher of the Year in a vote of team managers and the media.

Mendoza, 27, is leading the PCL with a 2.15 ERA, while posting an 11-5 record in 32 games, including 17 starts. Among his wins was a one-hitter on July 18 at Memphis that was originally a no-hitter before a scoring change turned a ninth-inning error into a double.

Mendoza is the third pitcher from the Royals' Triple-A club to win a league's top pitcher award. Mark Littell in 1973 and Mark Huismann in '85 won the award when Omaha was in the American Association.