ARLINGTON -- When Billy Butler was reminded before Saturday night's game that he had not grounded into a double play, he threw up his hands and went into the no-talk zone.

No sense in jinxing himself. After all, last season he set a Royals club record and led the Majors by rapping into 32 double plays.

One reason could be that the Royals are sending more runners into motion ahead of him. But it's not the result of anything that hitting coach Kevin Seitzer has changed with Butler.

"You don't change a great swing, you don't tell a great hitter to do something different. The guy doesn't strike out every much, he hits the ball hard and he can't run a lick, and that results in double plays," Seitzer said.

Treanor knows all about Texas jet stream

ARLINGTON -- As a member of the Rangers last season, Royals catcher Matt Treanor observed the the jet stream that sometimes dominates games here.

"It's pretty constant. Right now when it starts heating up and the wind blows more, if you look at the flags above right field, it's blowing straight in. But it hits the stadium and goes back out," Treanor said.

A prime example was Friday night's 11-6 Rangers victory in which they clubbed five home runs, at least three aided by the Texas tornado that tends to scoop up balls and carry them over the wall in right-center field.

"Right field plays a lot shorter than left field," Treanor said. "Everybody talks about how the ball flies here. Well, the ball flies from like center field to right field. Left field plays pretty true."

The distances in left are actually a bit shorter than they are in right, although the wall in left is higher because of the out-of-town scoreboard. The jet stream prevails to right-center field.

"It plays the same for both clubs," Royals manager Ned Yost said. "But it's a home-field advantage for them. They know they're a fly-ball-hitting team, so they grow their grass long which helps their infielders. They know they're going to hit the majority of their balls in the air, and they've got strong left-handed hitters and power guys that can hit balls to right-center field. So it works for them. But it could work for the opposition, too, just as easy."

Yes, the Rangers Ballpark infield grass is on the long side.

"The grass is humongous here," Treanor said. "They want that ball to die once it's hit. They've had so many years where it was so short and fast that guys were hitting ground balls through the hole at short and they were rolling all the way to the wall."

The obvious tactic for pitchers is to keep the ball down in the strike zone so it stays out of the jet stream and into the grass which slows it for the infielders.

Treanor noted that the jet stream is absent when the south wind subsides, mostly on very hot days in the summer when the air becomes "dead." It was certainly full of life on Friday night.

Tejeda improving in rehab process

ARLINGTON -- Robinson Tejeda, who went on the Royals' disabled list when shoulder inflammation diminished his velocity, is continuing to throw and is improving.

"He's getting stronger. What he's done is he's long-tossing and throwing on the side," manager Ned Yost said.

There is no timetable for his return, nor any indication if he'll have to rehab in the Minors.

"He's garnering strength in his shoulder but we've got to get it so he can sustain it through a 30-pitch outing, and we'll go from there," Yost said. "He's getting stronger and getting more life on his pitches."

Friday homers bring streak to an end

ARLINGTON -- Until the Rangers unloaded five home runs in their 11-6 victory on Friday night, the Royals had been doing a fine job of keeping the ball in the park.

Mike Napoli's homer off Jeff Francis in the third inning ended a stretch of 94 1/3 innings in which Royals pitchers had not surrendered a long ball. The homerless span went back to Miguel Cabrera's blast in the seventh inning on April 10 at Detroit.

The longest previous stretch was 104 innings from July 23 to Aug. 2, 1994, during which the Royals had an 11-0 record. The club record is 135 innings from July 7-22, 1970.