Rain Pushes ALCS Game 4 to Saturday Night, and Shawn Armstrong Opens for Cleveland With Tanner Bibee Lined Up Behind Him

Rain in Cleveland postponed Game 4 of the American League Championship Series late Friday night, moving the game to Saturday at 8 p.m. ET at Progressive Field and pushing Game 5 into what had been a scheduled off day, Sunday at 5 p.m. ET. The Guardians lead the Rays 2-1 in the best-of-seven series, and the winner will meet the Milwaukee Brewers, who swept the Dodgers in the NLCS, in a World Series scheduled to open Friday, Oct. 23, in Milwaukee.

The postponement matters most for pitching. Both clubs had planned around a Friday Game 4, and an extra day changes who is rested, who is available in relief and who can start a potential Game 5 on normal rest.

Cleveland's plan

Guardians manager Stephen Vogt said veteran right-hander Shawn Armstrong will start Saturday, which signals an opener approach. Armstrong has been one of Vogt's most reliable relievers this postseason and threw 1 2/3 scoreless innings in Game 2 of this series.

The most likely bulk pitcher behind Armstrong is Tanner Bibee, according to reporting from MLB.com, though the extra day could also bring left-hander Foster Griffin into that role. If Griffin does not pitch in Game 4, he could start Game 5 on five days of rest. That flexibility is the hidden benefit of the rainout for Cleveland: the club can now cover two games with its preferred arms without forcing anyone onto short rest.

Tampa Bay's plan

The Rays had Nick Martinez lined up for Game 4, and they could stick with him if he was not taxed by warming up before Friday's postponement. If Martinez starts Saturday, Tampa Bay could then line up Drew Rasmussen, Freddy Peralta and Griffin Jax for the remaining games of the series.

Peralta and Jax are the arms that matter. Peralta evened the series with his Game 2 start, and Jax started Game 3. Lining them up for Games 6 and 7 would give Tampa Bay its best pitchers in elimination games, but only if the Rays get there.

Where the series stands

Cleveland won Game 1 with a 7-3 rally, Tampa Bay took Game 2 by a 3-1 score behind Peralta, and the Guardians won Game 3, 3-2, after rain had already moved that game to an afternoon start. Cleveland has won with timely hitting and a deep bullpen, while Tampa Bay has leaned on its starters.

The rainout cuts both ways for the bullpens. Relievers on both teams get an extra day of rest, which benefits Cleveland's bullpen-heavy approach more than Tampa Bay's starter-led one. Two games in roughly 21 hours, though, means whatever the Guardians spend Saturday is spent before Sunday.

The Brewers are waiting

Milwaukee, which finished with the best record in baseball, has been off since completing its NLCS sweep of the Dodgers and will host Games 1 and 2 of the World Series. Every extra game in the ALCS is a small edge for the Brewers, whose rotation and bullpen will be fully rested for Game 1.

The rainout also tightens the window for the AL champion. If the series goes six or seven games, the winner could arrive in Milwaukee with little rest and a rotation out of alignment, which matters for World Series series prices and Game 1 starting pitcher matchups.

Betting angle

A bullpen game for Cleveland changes how Game 4 lines and totals should be read. With an opener and a bulk pitcher, the Guardians are counting on getting through the first time through the order cleanly and turning the game over to their relievers in the middle innings. That approach tends to produce lower-scoring early innings, which makes first-five-innings markets worth a look.

The weather is the other factor. A late start on a cold October night after a day of rain generally favors pitchers, and the market typically prices postseason totals low already. Bettors should confirm the forecast and the official starting pitchers before betting a total.

The series price also shifts with the schedule. Back-to-back games with Cleveland at home give the Guardians two chances to take a 3-1 or 4-1 lead in front of their crowd, and the extra rest for their bullpen helps them. Tampa Bay's best route is winning Game 4 with Martinez and setting up its top arms.

Fantasy and DFS angle

Postseason DFS slates are small, and a two-game window with a bullpen game is unusual. Hitters facing an opener often draw a favorable matchup early before the bulk pitcher enters, so the Rays' hitters at the top of the order are the most interesting DFS plays. Martinez, if he starts, projects for a shorter outing given the high-leverage stakes and Tampa Bay's willingness to go to its bullpen early.

The Verdexed angle

For the model's view of Saturday's Game 4, see /mlb/predictions and the MLB picks page at /blog/mlb-picks-2026-10-17 once it posts. The model reflects confirmed starters and lineups.

What's next

Saturday's result sets the shape of the weekend. A Cleveland win puts the Guardians one game from the World Series with Game 5 at home on Sunday. A Tampa Bay win evens the series and sets up a Sunday game in which the Rays can hand the ball to a fully rested Rasmussen. Either way, the winner gets only a few days before Game 1 in Milwaukee on Oct. 23.