CHICAGO (AP) -- The first hit was a check-swing RBI single in the

first inning. The rest were more vintage Mike Piazza.

The veteran catcher had his first four-hit game of the season

and the San Diego Padres won for the 12th time in 13 games, beating

the slumping Chicago Cubs 10-5 on Friday.

"When you get a broken-bat hit or half swing, it gives you

momentum. Your confidence is picked up a little bit," Piazza said.

Piazza doubled in the go-ahead run in the fourth. And the Padres

broke the game open with five runs in the fifth, thanks to three

errors by the Cubs, who have dropped 12 of 14. Friday's loss was

their fifth to the Padres in a week.

San Diego's Dave Roberts extended his hitting streak to 10

games, going 3-for-4 and scoring three runs. Brian Sweeney (2-0)

allowed one run in three innings of relief, after starter Woody

Williams strained his left calf running the bases in the second.

Williams had an MRI after the game and was headed to the

disabled list.

"He's going to be out a while," manager Bruce Bochy said. "We

just don't know for how long. We're going to talk about what we're

going to do from here."

Williams walked with two outs in the second inning and came up

limping as he approached third base on a ground-rule double by

Roberts. Clay Hensley pinch-ran for Williams, and Mike Cameron

struck out to end the inning.

Sweeney relieved Williams, who allowed one run and two hits.

Chicago's Glendon Rusch (1-5) gave up six runs -- five earned --

in 1 2-3 innings of relief.

"It was the result you expect from a day when you don't make

quality pitches," Rusch said.

Piazza, batting .220 entering the game, drove in Roberts with a

double to left with two outs in the fourth to give the Padres a 3-2

lead. Piazza's last four-hit game was last season with the Mets on

May 18 against Cincinnati.

The game turned ugly for the Cubs in the fifth.

Vinny Castilla led off with a single, and things unraveled from

there. Adrian Gonzalez followed with a single, and shortstop Ronny

Cedeno -- thinking he had called timeout -- threw the ball out of

play toward the third base dugout, and the runners advanced to

second and third.

With the bases loaded and one out, two runs scored when second

baseman Neifi Perez threw wildly to first trying to complete a

double play on Roberts.

Roberts wound up at second and stole third. He scored on

Cameron's double and exchanged words with Cubs catcher Michael

Barrett as he crossed the plate. Brian Giles then chased Rusch with

a single that made it 7-2.

Scott Williamson relieved, and Piazza singled. Left fielder Matt

Murton allowed Giles to score when he misplayed Khalil Greene's

sinking line drive, before Castilla grounded out to end the inning.

"I can't really comment on the whole matter right now,"

Barrett said of his exchange with Roberts. "It was a really

frustrating loss."

Roberts, who thought Barrett was angry at him for stealing

third, insisted he was not trying to show up the Cubs. He also said

he has "nothing but respect" for Barrett.

"I respect those guys over there," Roberts said. "I've known

Michael for a long time and he's a heck of a player. I just think

they're frustrated over there. They're not playing the baseball

they want to play."

Gonzalez hit a two-run homer in the eighth for the Padres to

make it 10-4.

In their first game back at Wrigley Field after a 1-8 trip, the

Cubs heard it from their fans. Rusch was serenaded by boos as he

left the game. But there was plenty of blame to go around.

There was no shortage of frustration in the clubhouse afterward.

Cubs starter Angel Guzman walked five batters, hit one with a

pitch, threw a wild pitch and allowed two runs in three innings.

The rookie has walked 16 batters in 18 innings in four starts since

being called up from Triple-A Iowa.

"It's pretty tough for me," he said. "I have to find that

release point and be consistent with it."Game notes
The Padres placed catcher Rob Bowen on the 15-day disabled

list with a sprained left thumb and recalled outfielder-first

baseman Paul McAnulty from Triple-A Portland on Friday. The club

also recalled right-handed pitcher Jon Adkins from Portland and

sent RHP Dewon Brazelton outright to Triple-A. ... Bochy brushed

aside Rick Sutcliffe's rambling and slurred interview during the

local San Diego telecast of Wednesday's game against Milwaukee in

which his microphone was apparently cut off. "It's not like he

cussed," Bochy said. "Lighten up, everybody." ESPN issued an

apology from Sutcliffe on Thursday. ... With a soggy field after a

day of rain, the Cubs kept RF Jacque Jones (groin) out of the

lineup. Jones is batting .340 with three homers and eight RBI in

his last 14 games.