The Seattle Mariners play against the Houston Astros in an MLB game tonight. Fans can watch this game for free online.

After taking two-of-three from the Houston Astros over the weekend, the Seattle Mariners should be flying high, but instead they are in a precarious position as

Everything you need to know about the MLB matchup between the Seattle Mariners and the Houston Astros, including how to watch and team news.

When the Mariners unveiled how they’d roll out their rotation for this weekend’s huge series vs. Houston to start the second half -- opting for Luis Castillo, then rookie Logan Evans, with Sunday marked as TBD -- it evoked more perplexity than anything.

Seattle has a mark of 14-16 in contests where oddsmakers favor it by -105 or worse on the moneyline. The Mariners have an implied victory probability of 51.2% according to the moneyline set for this matchup. Contests with Seattle has gone over the total set by bookmakers in 53 of 96 chances this season.

The Astros looked like they were destined to leave Seattle with their tails between their legs, having just frittered a seven-game AL West lead down to two games. They started the game with enough injuries to fill a small hospital,

The Mariners have had a stinging share of hindsight over each of the past two offseasons -- perhaps more than any team in baseball -- when it comes to reflecting back on the 162-game gauntlet and examining how if just one game swung a different way,