4-3 (2OT): Final (OTT). 3.10-3.77: xG (OTT-BOS). 10-11: HD (OTT-BOS). Series 3-1 OTT: Semifinal The semifinal ended on the kind of play Game 4s tend to deliver: a one-timer through traffic, early in the second overtime. Michela Cava stepped into a Kateřina Mrázová feed at the top of the left circle and put it inside the post on a shot the model priced at 0.36 xG , the highest-graded Ottawa look of the night. By that point Boston had played a long scoreless stretch after Brooke Hobson's third-period tying goal, on more than half of the night's combined shots, and the Fleet were one body short of stopping the recovery off Mrázová's opening cycle pass. Ottawa wins the best-of-five 3-1 , the Charge's first PWHL semifinal series win in franchise history, and they earn their berth in the Walter Cup Final. Five goals in nine minutes, four lead changes The second period was a different game from the three that preceded it. Ottawa opened a 2-0 lead on Rebecca Leslie 's 0.26 xG wrister at P2 3:25 (primary Brianne Jenner , secondary Jocelyne Larocque ). Boston answered three times in 1:33: P2 5:19 , Shay Maloney from the high slot off a Haley Winn feed (0.13 xG); P2 6:00 , Megan Keller with a shorthanded wrister from the point through Alina Müller 's screen on the same power play that had put Ottawa ahead (0.05 xG); P2 6:52 , Sophie Shirley burying a Jill Saulnier centring feed at the backdoor for the highest-quality look of the sequence ( 0.29 xG ). Boston led 3-2 on a stretch where they generated high-quality offence in volume. Brooke Hobson pulled Ottawa even at P2 12:12 on a 0.22 xG wrister from the slot off a Fanuza Kadirova entry. The PBP credits Gwyneth Philips with the secondary assist on the goal, a rare goalie-as-assist on a long stretch pass that sprung Kadirova up the right wing. Five goals in 8:47 of game clock, four lead changes, and a 3-3 score that would hold for the rest of regulation and through the first full overtime. The long scoreless stretch From the Hobson tie at P2 12:12 through the opening of the second overtime, the teams played the rest of the game 3-3. Boston controlled the chance battle in that window. In overtime alone Boston had 9 of the 20 shots and 0.78 xG to Ottawa's 1.07 . The Fleet's loudest OT1 looks: Shay Maloney 0.17 xG at P4 4:21, Shay Maloney 0.14 xG at P4 17:49. Ottawa's best counter-look in OT1: Kateřina Mrázová 0.18 xG at P4 14:22. Both goaltenders kept the score where it was until the next shift after intermission. The Cava one-timer, in context P5 1:12. Michela Cava , 0.36 xG, 5v5, assisted by Kateřina Mrázová . The opening shift of the second overtime. Mrázová recovered the puck off the right-wing wall and slid it cross-ice to Cava in motion at the top of the left circle. A clean one-timer through traffic that the model priced as the highest-quality Ottawa look of the entire night. Recovery, transition pass, one-timer, in. The series ended in the next intermission's quietest dressing room. Goaltending, decomposed Gwyneth Philips : 43 of 46 on 3.77 xG faced , +0.77 GSAx . The three goals she allowed graded a combined 0.47 xG . Four-game series GSAx total: +6.64 on 142 shots faced for a series save percentage of 0.951 . The Charge rode her into the Walter Cup Final. Aerin Frankel : 29 of 33 on 3.10 xG faced , -0.90 GSAx . The four goals she allowed graded a combined 0.92 xG . The Cava series-winner was the only one that beat her on a high-danger look. Four-game series totals: -2.03 GSAx on 93 shots . Frankel didn't have a bad series, she had an average one, against a Boston team that generated 13.64 xG of offence and got beaten on the goaltender at the other end. The game in cumulative xG The scoring timeline P1 6:38 · Sarah Wozniewicz (PP) · xG 0.09 · OTT 1, BOS 0. P2 3:25 · Rebecca Leslie · xG 0.26 · OTT 2, BOS 0. P2 5:19 · Shay Maloney · xG 0.13 · OTT 2, BOS 1. P2 6:00 · Megan Keller (PP) · xG 0.05 · OTT 2, BOS 2. P2 6:52 · Sophie Shirley · xG 0.29 · OTT 2, BOS 3. P2 12:12 · Brooke Hobson · xG 0.22 · OTT 3, BOS 3. P5 1:12 · Michela Cava · xG 0.36 · OTT 4, BOS 3 Top scoring chances OTT P5 1:12 · Michela Cava default · xG 0.36 (goal). OTT P2 3:25 · Rebecca Leslie default · xG 0.26 (goal). OTT P2 12:12 · Brooke Hobson default · xG 0.22 (goal). OTT P1 17:43 · Brianne Jenner default · xG 0.20. OTT P4 14:22 · Kateřina Mrázová default · xG 0.18. OTT P5 1:12 · Michela Cava default · xG 0.14. OTT P1 13:39 · Michela Cava default · xG 0.14. OTT P3 15:56 · Emily Clark default · xG 0.13. BOS P2 6:52 · Sophie Shirley default · xG 0.29 (goal). BOS P2 16:03 · Sophie Shirley default · xG 0.19. BOS P4 4:21 · Shay Maloney default · xG 0.17. BOS P3 3:10 · Alina Müller default · xG 0.16. BOS P2 14:15 · Jessie Eldridge default · xG 0.15. BOS P2 15:50 · Liz Schepers tip · xG 0.15. BOS P4 17:49 · Shay Maloney tip · xG 0.14. BOS P1 4:45 · Alina Müller default · xG 0.14 What this read isn't Not a Boston disappointment. The Fleet ran 13.64 xG across the four games and outshot Ottawa by 48 across the series. By process metrics they were the better team for most of the four games. The series went the other way because Philips ran a goaltending stretch above her career median and the chances that went in for Ottawa were lower-quality than the ones Boston missed.. Not a vindication of Ottawa's process. The Charge finished 6.97 xG across the four games and 10 non-EN goals worth 1.36 combined xG . They won because their goaltender was an outlier and their finishers buried the few chances they got. The Walter Cup Final will be much harder.. Not a goalie blame story for Frankel. -2.03 GSAx on 93 shots faced across the series is roughly average. Three of the four goals against tonight came inside a window where the Fleet were never going to get the puck out of their own zone for more than a shift at a time.. Not a Walter Cup Final preview. Ottawa now waits on the other semifinal. Whichever team comes out of Minnesota-Montréal will have played as many or more total OT minutes; the Charge get the longer rest. That's the only meaningful series-WP signal until we know the opponent. Methodology xG model : PWHL-calibrated logistic regression on 16,709 non-EN shots. Same fit as the methodology post . Features: distance, angle, rebound (≤3 s), penalty shot, power play, overtime, scorer-tagged quality chance, seven shot-type dummies. Empty-net shots are priced outside the main model.. GSAx : summed xG on shots faced minus goals allowed, computed per-goalie from the PBP feed. Empty-net shots and goals are excluded from both sides of the ledger. Overtime shots count.. Numbers regenerate on every build. A PBP re-sync or xG recalibration reshapes every figure in this post on the next static export, including the series cumulatives across games 308, 310, 313, and 314. Full play-by-play, shift overlays, and the per-player game log for this game are at /games/314 . The series projection and the updated Walter Cup Final bracket live at /playoffs/bracket .