The Seattle Mariners, who lost in stunningly heartbreaking fashion on Friday night, rebounded on Saturday and Sunday to beat the Houston Astros both nights and move to within four games of the American League West lead.

While the Mariners still face an uphill battle to make the playoffs (36 percent chance), it was a nice testament to the team's resilience and fight - something several fans were wondering if they had.

While the offense was much better overall in this series, Seattle also got solid starting pitching from Emerson Hancock and Bryan Woo on Saturday and Sunday.

The former went seven strong innings in his win, while the latter went six strong in his.

Woo, who has struggled on the road all season, gave up just two runs on three hits. He walked one and struck out five in moving to 9-8 on the season.

But after the game, he gave a simple yet troubling comment to reporters.

Per Adam Jude of the Seattle Times:

Bryan Woo had some shoulder discomfort tonight, but he quickly shrugged it off postgame. “Nothing I’m concerned about.”

Here's what you need to know and think about.

In the bottom of the sixth inning, with the Mariners leading 3-2, Woo struck out Yordan Alvarez with a slider in the dirt. He then hit Isaac Paredes with a fastball in the leg, and the trainer came out to look at him.

Woo stayed in the game to pitch to Jose Altuve, getting him to pop up to catcher Cal Raleigh. Woo's velocity was normal in that at-bat, as he hit between 94-96 mph.

With Woo at only 75 pitches, manager Dan Wilson went to Eduard Bazardo for the seventh inning. I personally didn't have a problem with it, given Woo's road struggles and the fact that he was facing the order for the third time, but some thought Wilson pulled Woo too early.

Perhaps the "shoulder discomfort" helps frame that decision. Perhaps not.

Any time you hear a pitcher say they felt anything, it's cause for concern, but it should be noted that the Mariners are rather conservative with injuries, especially those that happen in-game.

They've removed several players from games in Wilson's tenure at the first sign of trouble, including Woo last season in Houston. In a must-win game last September, Woo was removed after throwing warm-up pitches in the sixth inning. He had thrown five dominant, shutout innings in a game the M's had to have, so they aren't afraid to take guys out, even in major situations.

The fact they were willing to leave him in is somewhat comforting.

But again, it bears watching how Woo feels today, because that's the real tell.

Well, because of Monday's off day, Woo will get an extra day to recover before his next scheduled start, which is Saturday at home against the Chicago Cubs.

That's certainly good news, but if there is continued discomfort, then it could be time for top prospect Kade Anderson.

The No. 3 pick in the MLB Draft last season, Anderson is 10-1 with a 1.06 ERA at Double-A Arkansas. He's struck out 135 batters in 93.1 innings. He's the No. 5 prospect in the sport, via MLB Pipeline.