O'Brien scored a goal on two shots and added six hits in Wednesday's 7-0 win over the Ducks.

EDGE Analysis

O'Brien was in the lineup over Brandon Tanev in this contest, and the former made the most of his rare chance to play. Through nine outings this season, O'Brien has two goals, 14 shots on net, 21 hits, 12 PIM and a minus-4 rating. He was a scratch for six games prior to Wednesday, and he's likely to max out as a rotation fourth-line option the Mammoth utilize whenever they need some toughness.

O'Brien was scratched for the sixth straight game in Monday's 6-3 loss to the Sharks.

EDGE Analysis

O'Brien played just twice over 15 games in November, contributing five hits and five PIM. His trend of sitting in the press box looks set to continue in December, especially since the Mammoth called up top prospect Daniil But, who is likely to get a look in the lineup before O'Brien draws back in. On the year, O'Brien has one goal, 12 shots on net, 15 hits and 12 PIM over eight appearances, and he'll typically only play when the Mammoth need a boost in grit.

O'Brien scored a goal on two shots and blocked two shots in Friday's 6-3 win over the Sharks.

EDGE Analysis

This was O'Brien's first goal in a Utah sweater -- he was limited to two assists over 28 games with the team in 2024-25. He missed the first four contests of 2025-26 due to an undisclosed injury, but head coach Andre Tourigny was impressed with O'Brien's performance and confirmed the 31-year-old would play again Sunday versus the Bruins, Brogan Houston of Deseret News Sports reports. O'Brien doesn't offer much for standard fantasy formats, but he's logged at least 100 hits and 50 PIM in four straight seasons, so he could have appeal in banger leagues if he plays regularly.

O'Brien (undisclosed) will play in Friday's game against the Sharks, Cole Bagley of KSL Sports reports.

EDGE Analysis

O'Brien began the regular season on non-roster injured reserve, but he'll be able to make his season debut during Friday's matchup, replacing Kailer Yamamoto in the lineup. O'Brien made 28 regular-season appearances for Utah last year, recording two assists, 100 hits, 50 PIM and 11 blocked shots while averaging 9:18 of ice time.

O'Brien was designated for non-roster injured reserve with an undisclosed injury Monday.

EDGE Analysis

O'Brien was dealing with a lower-body injury during preseason, but it's not clear if this is related to the same issue or a different problem. The team didn't provide any specifics in its roster release, so fantasy managers will have to take a wait-and-see approach. For now, it's safe to assume O'Brien won't be ready for Opening Night against the Avalanche on Thursday.

O'Brien (lower body) is expected to be in the lineup for Tuesday's preseason game versus the Kings, per Brogan Houston of Deseret News Sports.

EDGE Analysis

Based on Tuesday's morning skate, O'Brien is poised to play on the fourth line and see time on the penalty kill, which will likely be his roles during the 2025-26 campaign. He compiled two assists, 34 shots on goal, 100 hits and 50 PIM across 28 appearances during the 2024-25 regular season.

O'Brien (lower body) is participating in practice in a regular jersey Thursday, according to Brogan Houston of Deseret News Sports.

EDGE Analysis

O'Brien was considered week-to-week just three days ago and is now considered day-to-day. The 31-year-old veteran had two assists, 50 PIM and 100 hits over 28 regular-season games in 2024-25.

O'Brien (lower body) is week-to-week, Brogan Houston of Desert News Sports reported Wednesday.

EDGE Analysis

O'Brien hasn't been skating at training camp, and it's unclear when he will resume practicing with his teammates. He produced two assists, 34 shots on goal, 100 hits and 50 PIM across 28 regular-season appearances in 2024-25. Once healthy, O'Brien will be in the mix for a bottom-six role.

O'Brien (lower body) will play against Nashville on Monday, per Belle Fraser of The Salt Lake Tribune.

EDGE Analysis

O'Brien will occupy a bottom-six role and provide some physicality in the lineup after missing the last 14 games. He has produced two assists, 31 shots on goal, 98 hits and 50 PIM in 27 appearances this season. O'Brien's return will bump Kailer Yamamoto to the press box as a healthy scratch.

O'Brien (lower body) could return to the lineup before the end of the regular season, Belle Fraser of The Salt Lake Tribune reports Tuesday.

EDGE Analysis

O'Brien will miss his 12th straight game against Seattle on Tuesday and likely won't play against Nashville on Thursday. However, he could be an option during Utah's regular-season ending three-game road trip. O'Brien has compiled two assists, 31 shots on goal, 98 hits and 50 PIM through 27 appearances this season.