After missing a championship-winning putt on the first playoff hole, Morrow rebounded on the second with a stellar approach shot and a birdie at the 323-yard, par-4 fourth.

That secured Morrow’s second consecutive individual state title, after he’d shot an even-par 71 matched by Xaverian senior Michael McCormack and St. John’s Prep senior AJ Bodnar.

Morrow and McCormack’s efforts led the Hawks to a 14-over-par 298, surging past runner-up St. John’s Prep (308) to secure their second straight team title and eighth in program history.

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The win capped a dominant season for Xaverian (14-2), which also notched a 10-stroke victory at the Cape Cod National High School Invitational and a seven-stroke victory at the MIAA South Sectional.

“There is a pressure [in the playoff], but I kind of like it,” said Morrow, a Milton resident. “It was a lot of fun to be out there. It’s pretty rare in junior golf to have a big crowd following you. So I just feed off of that.”

Monday’s field, which featured 13 teams and 97 golfers, lacked much separation early on. Through nine holes, Xaverian and St. John’s (Shrewsbury) were tied for the lead at 7 over.

But as the round wore on, the Hawks’ consistency prevailed. On their final nine holes, McCormack shot 1 under and Morrow shot even.

Xaverian repeated as the MIAA Division 1 golf state champion at Wellesley Country Club. Senior Chris Morrow (third from right) was the individual champion, winning a two-hole playoff.Matty Wasserman

Xaverian also received scoring efforts from junior Luke Edgar (75), who placed sixth, and junior Tucker Pierce (81), who finished tied for 31st.

“Both of these guys [Morrow and McCormack] proved it, and really my whole team proved it this year — their ability to just worry about the next shot,” said Xaverian coach Gerry Lambert. “Doesn’t mean we were perfect. Plenty of bogeys out there today for everybody, including us. But I’m continually amazed by how mentally strong they are.”

Morrow showcased that resolve in the playoff. On the first hole, he missed a potential winning putt from within 5 feet, but recovered to make his next putt for bogey from a similar distance.

He followed that up with a tee shot down the middle and an approach shot that climbed over a hill and landed within feet of the hole. Then, with another short-putt opportunity to clinch the title, Morrow took a deep breath and sank the winner.

“All year, we had four solid guys at each tournament that showed up and played really well,” said McCormack. “We’re just a really confident team, and we’re really talented.”

St. John’s Prep’s AJ Bodnar was on all target all day with his even-par 71 at Wellesley Country Club.Matthew J. Lee/Globe StaffLukas Schleyer from St. John’s (S) carded a 77 at Wellesley CC.Matthew J. Lee/Globe StaffHingham’s Michael Rogers put together a stellar round with a 2-over-par 73.Matthew J. Lee/Globe Staff

MIAA Division 1 Championship

at Wellesley Country Club

Team

 1. Xaverian, 298; 2. St. John’s Prep, 309; 3. St. John’s (S), 312; 4. Wellesley, 313; 5. Hingham, 318.

Individual

 71 — Chris Morrow, Xaverian (Par 71; Won 2-hole playoff); Michael McCormack, Xaverian; AJ Bodnar, St. John’s Prep.

 72 — Wesley Paine, Longmeadow.

 73 — Michael Rogers, Hingham

 75 — Luke Edgar, Xaverian

 76 — Wyatt Rue, St. John’s (S); Morgan Premock, Lincoln-Sudbury; Max Zides, North Attleborough.

 77 — Lukas Schleyer, St. John’s (S); Aarav Lavu, Wellesley; Seamus O’Holleran, St. John’s Prep; Teddy Uller, Wellesley; Ben Burgess, Franklin.

 78 — Adrian Daigle, Wellesley; Glen Murdough, Concord-Carlisle; Kyle Post, St. John’s (S); Henry Bizzozero, BC High; LB Manning, St. John’s Prep; Tyler Fawaz, North Andover.

Matty Wasserman can be reached at matty.wasserman@globe.com. Follow him @Matty_Wasserman.