A new Braves homestand began Friday much like the last homestand ended -- with the Braves losing and Chipper Jones nursing an injured leg.

The third baseman reinjured his right quadriceps muscle late in a 10-2 loss to the Seattle Mariners at Turner Field, where the Braves dropped their fourth consecutive home game and probably lost their best hitter for a while.

"It's pretty bad," said Jones, describing an egg-sized knot on his right thigh, where he partially torn the quadriceps June 7. "It got to the point where I couldn't move out in the field [Friday].

"This is definitely the worst it's been. It's raised a lot higher than the other leg. I'll get back in there when it feels better. I missed a couple of days last time, and it's worse this time."

Jones left after seven innings, and the American League West cellar-dwelling Mariners scored five runs in the eighth to turn a close game into a series-opening rout before a crowd of 40,268.

The newly installed 40-foot Chick-Fil-A cow looming high above left field didn't get many chances to display its tomahawk-chopping capabilities in a game that came unraveled soon after Braves starter Jorge Campillo left in the seventh inning.

"It just got bad in the eighth inning," said manager Bobby Cox, whose Braves have lost 18 of 28 games since ending their 21-12 surge.

To add another shovel of woe to the homestand opener, Braves shortstop Yunel Escobar left after eight innings with a strained hip flexor. He had a pronounced limp afterward and didn't know if he would play again in the series.

Jones was hurt while scoring from second base on Omar Infante's fourth-inning single for a 1-0 lead. The pain worsened over the next few innings.

He missed two starts June 8-10, and he's 6-for-32 since returning to the lineup, dropping his major league-best batting average from .420 to .390.

Deeper slumps belong to Jeff Francoeur, who grounded into another bases-loaded double play to end the fourth inning, and reliever Jeff Bennett, who allowed two inherited runners to score in the seventh as the Mariners opened a 4-1 lead.

It was only the 15th win in 52 games since April 23 for the Mariners, who fired their general manager last week and canned their manager on Thursday. They won Friday in the first game managed by Jim Riggleman since 1999.

"For some reason I just can't hit with bases loaded right now," said Francoeur, hitless in his past 15 at-bats with bases loaded and 2-for-19 for the season -- more than twice as many opportunities as any other Braves player.

"I've just got to keep working my [butt] off in the batting cage and the film room. It is what it is. I felt good at the plate, I really did. And I had an opportunity. I'm [ticked] off at myself."

He has hit only .219 in his past 32 games.

"I feel like I'm so close to turning the corner, and for some reason I just ain't going right now," Francoeur said.

The Braves have lost seven of 12 home games since a 19-3 home surge. Fortunately for the fourth-place Braves, the National League East-leading Phillies have lost seven of their past 10 games. The Braves stayed six games behind Philadelphia.

The last time Seattle saw Campillo, he was a struggling Mariners reliever who gave up nine hits and eight earned runs in 5 1/3 innings over his final two appearances for them in September.

Campillo's been a surprising success for the Braves, even if his record (2-2) doesn't reflect it. He was charged with eight hits and four earned runs in 6 1/3 innings Friday in his seventh start since moving from the bullpen. He has a 2.54 ERA, including 3.26 as a starter.

The last two runs on Campillo's ledger came after Bennett gave up two singles and a sacrifice fly to the first three batters he faced. Bennett has allowed 16 hits and 10 earned runs in 6 2/3 innings over seven games in a two-week span.

"That's the worst, when you come into the clubhouse after giving up someone else's runs," Bennett said. "It's the worst feeling in the world. That's whey you're not doing your job, when you give up other people's runs."

The Mariners tacked on five runs in the eighth against usually reliable lefty Will Ohman, sending his ERA from 2.10 to 3.52.

Mariners starter Erik Bedard left after three innings due to back spasms.