Riley O'Brien: Everything you need to know

O'Brien earned the save in Friday's 6-5 win over the Cubs, allowing one run on one hit in the ninth inning. He did not record a walk or strikeout. O'Brien was summoned to protect a two-run lead and was able to close things out despite allowing a run after a leadoff double. It was the 31-year-old's first save since May 14, and he's now yielded earned runs in four of 10 appearances during a shaky month. For the year, he's 14-for-18 in save chances with a 3.20 ERA, 0.99 WHIP and 27:4 K:BB across 25.1 innings.

O'Brien blew a save against the Pirates on Tuesday, allowing two runs on two hits and one walk over one inning. O'Brien was called upon to protect a two-run lead in the ninth inning. He couldn't get the job done, largely due to his own wildness -- in addition to giving up two singles, he also walked one and hit two Pirates batters. This was O'Brien's fourth blown save of the season, though he still is tied for the third in the league with 13 successful saves. He's held the opponent without an earned run in 19 of his 23 outings but has given up multiple runs in his other four appearances.

O'Brien earned the save Thursday against the Athletics, striking out two over a scoreless ninth inning. O'Brien was called upon in the ninth inning and worked around hitting leadoff batter Nick Kurtz to lock down his 13th save of the season, tying him for the MLB lead. The right-hander has responded well after a rough stretch in which he blew three saves over eight appearances, bouncing back with saves in consecutive outings. O'Brien continues to dominate overall, sporting a 2.57 ERA, 0.90 WHIP and an outstanding 25:2 K:BB across 21 innings.