BOSTON (Interstat) — Anthony Seigler doubled twice, homered and drove in two runs to lead the Boston Red Sox to a 6-4 victory over the Toronto Blue Jays on Friday night at Fenway Park before a crowd of 37,405.

The game lasted 3 hours, 18 minutes.

Seigler finished 4 for 5 with a home run and two RBIs. His two-run homer in the first inning gave Boston an early lead, and his run-scoring double in the eighth inning provided the final margin after Toronto had tied the game in the top of the inning.

The Red Sox improved to 53-49. The Blue Jays fell to 47-57.

Garrett Whitlock (6-1) earned the win with 1 1/3 innings of scoreless relief. Aroldis Chapman pitched a perfect ninth inning with two strikeouts for his 24th save.

CJ Van Eyk (0-1) took the loss after allowing two runs in the eighth inning.

Boston starter Patrick Sandoval allowed five hits and no earned runs over 4 2/3 innings with three strikeouts. He left with a 3-0 lead after being charged with an unearned run on an error by first baseman Vladimir Guerrero Jr. in the seventh inning.

Toronto starter Trey Yesavage struck out nine over four innings but allowed three earned runs on five hits.

The Blue Jays fell behind 1-0 in the first inning when Seigler launched a solo home run to right field off Yesavage.

Boston extended its lead in the third inning. Seigler singled before Ceddanne Rafaela hit a line-drive home run to left field for a 3-0 advantage. The home run was upheld after a replay review.

Toronto stranded two runners in the first inning and another in the second as Sandoval worked around baserunners. The Blue Jays had a scoring chance in the fourth inning when Alejandro Kirk singled and Davis Schneider reached on a force out, but Daulton Varsho’s single moved Schneider to second before Luis Urias popped out and Myles Straw lined out.

Yesavage struck out the side in the second inning and worked a scoreless fourth before leaving after 79 pitches.

Boston added a run in the sixth inning. Masataka Yoshida walked and Caleb Durbin was hit by a pitch. Jarren Duran singled to load the bases, and Andruw Monasterio’s sacrifice fly to center field scored Yoshida for a 4-0 lead. Connor Wong singled, but Lukes threw out Durbin at home plate to end the inning.

Toronto’s offense awakened in the seventh inning. Ernie Clement was hit by a pitch off reliever Tyron Guerrero, who had entered for Sandoval. Vladimir Guerrero Jr. singled to center field, sending Clement to second. Kazuma Okamoto then hit a three-run home run to center field, cutting Boston’s lead to 4-3.

The Blue Jays tied the game in the eighth inning. Nathan Lukes doubled to left field off reliever Zach Penrod, and Varsho singled to right field, sending Lukes to third. Andrés Giménez then hit a sacrifice fly to center field, scoring Lukes to make it 4-4.

But Boston answered in the bottom of the eighth against Van Eyk. Jarren Duran singled to left field. Andruw Monasterio popped out. Pinch-hitter Romy Gonzalez doubled to left field, scoring Duran for a 5-4 lead. Seigler followed with a double to left field, scoring Gonzalez for a 6-4 advantage. Rafaela singled, but Van Eyk escaped further damage when Wilyer Abreu popped out and reliever Adam Macko intentionally walked Willson Contreras before Jahmai Jones struck out.

Chapman retired the side in order in the ninth, striking out Kazuma Okamoto and Alejandro Kirk and getting George Springer on a fly out.

Seigler’s performance ended a brief slump. In his previous four games, he was 3 for 17 with no extra-base hits.

The most important part of the game occurred in the eighth inning, when Boston regained the lead immediately after Toronto tied the score. Duran’s leadoff single set the stage, and Gonzalez’s double put the Red Sox ahead for good. Seigler’s second double of the game, a fly ball to left, provided insurance and put the game out of reach.

Boston’s bullpen combined for 4 1/3 scoreless innings. Tyron Guerrero pitched 1 1/3 innings with one strikeout, Whitlock worked 1 1/3 innings, and Chapman finished.

For Toronto, Jeff Hoffman allowed one hit in a scoreless seventh inning. Mason Fluharty struck out two in the sixth, and Macko recorded one strikeout in the eighth.

Toronto’s offense managed nine hits, with Guerrero Jr. and Varsho each collecting two. Okamoto drove in three runs with his homer. The Blue Jays stranded five runners.

Boston’s 12 hits included two each from Seigler, Rafaela, Duran and Wong. Rafaela drove in two runs with his home run.

The Blue Jays lost their fifth straight game after being swept by Tampa Bay at home earlier in the week. Toronto had won two of three against Boston in a June series in Boston.

The Red Sox improved to 6-2 in their last eight games after splitting a four-game series with Baltimore.

Interstat’s game simulator projected a final score of Boston 7, Toronto 3. Interstat’s ELO system gave Boston a 58.30 percent probability to win. Boston was installed as a pregame favorite with a spread of minus 1.5. The total score of 10 went under the over-under line of 8.5.