Colleen O’Brien was back at Greenhills Thursday, once again wearing green and once again winning a girls tennis regional title.

But this year, the flight and the team were both different.

O’Brien, the No. 2 singles state champion for the Gryphons last year, transferred to Father Gabriel Richard for her junior season.

Playing No. 1 singles this year, O’Brien won her second straight regional championship with a 6-0, 6-2, finals win over Monroe St. Mary Catholic Central

“I had good confidence out there I’d say,” O’Brien said. “I think my forehand was working pretty well.

O’Brien was one of three Gabriel Richard singles regional champions, helping the Fighting Irish qualify for the state tournament for the sixth consecutive year. Senior Anjali Sood won the No. 2 singles flight and junior Maddy Szuba won No. 3 singles, while freshman Sarah Szuba finished runner-up at No. 4 singles.

“It was a really good day in singles,” Gabriel Richard coach Jim Sayed said. “And they work really hard all year-round, and the results came today so a really nice showing for them.”

Grosse Ile took home the regional title, and SMCC also advanced from the state finals from the Greenhills regional. All three will compete at Kalamazoo College May 31-June 1 in the state finals.

Greenhills, our AnnArbor.com Team of the Week, was unable to make it back to the state finals after finishing No. 3 in the state last year. This year’s Gryphons lineup features just two seniors and one junior, after losing O’Brien and No. 1 singles state champion Kasey Gardiner from last year’s team.

“We need experience in every facet of the game and especially in competing well,” Greenhills coach Mark Randolph said. “My hope is that this is a step in the direction of learning how to compete. We’ll see if we can build on that next year, that’s our plan at least.”

The Gryphons best flight of the day was No. 4 doubles, when the team of Minna Wybrecht and Anicka Gajar won a first set tiebreaker in a semifinals match, then dropped the second set 6-0 before winning the third set 6-4 to make the finals.

“This is a new team but also a nice team,” Randolph said. “They competed well, I’d like to think all four of them are going to be proud.”

With her regional title, O’Brien stayed undefeated on the year against a schedule that has included many of the top players from around the state moving up to No. 1 singles in a tough Gabriel Richard schedule.

The Irish went 13-1 in duals on the year, facing every top ten team in Division 4 and several top teams in the other three divisions. Their only loss on the year was to defending Division 4 state champion Bloomfield Hills Sacred Heart.

“We have a very demanding schedule, and they’ve done a great job with it,” Sayed said.

O’Brien said her toughest competition two weeks from now in Kalamazoo will be Meika Ashby, a Kalamazoo Hackett senior whose only high school loss was to Gardiner in last year’s state finals.

“I think I’ve got a good chance of going the distance, so we’ll see how it goes,” O’Brien said.

Kyle Austin covers sports for AnnArbor.com. He can be reached at kyleaustin@annarbor.com or 734-623-2535. Follow him on Twitter @KAustin_AA.