SEATTLE -- The grind of playing 20 straight games without a day off is taking its toll on the Mariners.
Ben Gamel and Danny Valencia were not in the Mariners' starting lineup on Sunday due to minor injuries. Gamel is dealing with swollen lymph nodes in his groin that is causing soreness in the area. Valencia is out for the second consecutive day with a sore right wrist.
Mariners manager Scott Servais said he doesn't expect either player to be out long term and hopes both can return to the lineup on Tuesday against the Phillies.
"We have not had an off-day in 20 days," Servais said. "It takes its toll. We've played well through it. Guys have continued to battle and [we've] put ourselves in a [better] spot than where we were a month ago, so I'm happy with that. But it's a grind to get through 20 days."
Gamel said the issue flared up Saturday and it's the first time he's felt it. He said he's on antibiotics now and he doesn't expect to miss any future games.
"Definitely don't want to miss games," Gamel said. "But if you want to get healthy, you got to get healthy."
Gamel hadn't missed a game since May 27 before Sunday and was slashing .394/.426/.532 in June. He's hit safely in 25 of his last 27 games and leads all Major League rookies with a .346 batting average.
Valencia, who was scratched from the Mariners' lineup Saturday, was sidelined for three games after hurting his wrist sliding into third base in a May 19 tilt against the White Sox, but it wasn't significant enough to send him to the disabled list. He's hitting .273/.333/.414 this season with 10 doubles, seven home runs and 39 RBIs in 69 games.

Iwakuma still taking time to rehab shoulder
Servais said there's no timetable for a third rehab start for right-hander Hisashi Iwakuma, who is on the 10-day disabled list with right shoulder inflammation.
"[We're] giving him some extra time, trying to feel a little bit better in his shoulder and where the ball is coming out," Servais said.
The 36-year-old allowed four runs on four hits and two walks in a 49-pitch outing against the Angels' Triple-A Salt Lake affiliate on Monday. Iwakuma hasn't pitched for the Mariners since May 3 after going 0-2 with a 4.35 ERA in his first six outings.