KC@SEA: Royals relay nails Seager at home to end 10th

SEATTLE -- In the 10th inning of Monday night's loss to the Royals, Kyle Seager tagged at third on a fly ball to left field and dashed home with the potential winning run, only to be tagged out at the plate by mere inches. The Mariners lost 6-5 in 12 innings -- just another close loss in a season full of them.

"You're going to have some games where you get way out ahead, and some games where the other team does, it's the middle, close games that make your season," Seager said.

Seattle is 19-29 in one-run games, and has lost four of its last five. Since 2011, the Mariners have had nearly one-third of their games decided by one run, and over half have been decided by two or fewer runs. Additionally, the Mariners have played a club-record 21 extra-inning games this season.

If there's a silver lining to those lengthy games, it's that the bullpen, which currently features five rookies, has gotten plenty of work.

"We've had to use all of our guys and because of that we've gained a great deal of experience, they're all young down there," manager Eric Wedge said.

Hultzen will see Dr. Andrews about shoulder

Top Prospects: Danny Hultzen, LHP, Mariners

SEATTLE -- Mariners prospect Danny Hultzen's ongoing struggle with injuries isn't over yet.

Hultzen -- the second overall pick in the 2010 First-Year Player draft -- will seek a second opinion from the renowned Dr. James Andrews for discomfort in his throwing shoulder sustained when he arrived in the instructional league.

"[Team doctor] Ed [Khalfayan] saw him and quite frankly doesn't like what he sees," general manager Jack Zduriencik said. "He has every right to have a second opinion and Ed wants him to have a second opinion. We've been in touch with Dr. Andrews and we're trying to work on getting him in there on Thursday and let them look at it, and make a decision at that time."

The talented southpaw threw just 30 2/3 innings in Triple-A this season because of shoulder injuries.

"He's had a couple MRIs and they've come back in good shape," Zduriencik said. "We knew there was an issue in there, but it wasn't a surgical issue. Now for some reason it's either gotten irritated, whatever they case might be, or it's been damaged even a little further, so the rehab program was on."

When healthy, Hultzen has looked every bit the player the Mariners envisioned when they drafted him with their top pick. In his five starts for Tacoma this year, the lefty went 4-1 with a 2.05 ERA. In 2012, he was 8-3 with a 1.19 ERA at Double-A.

Worth noting

• With his 29th home run of the season on Saturday, Raul Ibanez made Major League history by matching Hall of Famer Ted Williams for most home runs in a player's age-41 season.

Nick Franklin entered Tuesday's game against the Royals riding a seven-game hitting streak, matching the longest of his career.