Greenwich High School’s field hockey team began the CIAC Class L state Tournament in dominant fashion, coasting to a 7-0 victory over visiting Conard in Wednesday’s opening round.

The eighth-seeded Cardinals (13-4-0-1) advanced to the Class L quarterfinals where they will visit rival Darien, the tournament’s No. 1 seed. The Blue Wave, who are 20-0 on the season, moved on to the quarterfinal-round by topping No. 17 Newtown in the first round, 7-0.

In Wednesday’s Class L Tournament opener against Conard at Cardinal Stadium, senior forward Klara Mueffelmann recorded a hat trick to pace Greenwich’s offense. Sophomore Stella Thibeault had one goal and one assist for the Cardinals, who held a 4-0 halftime lead on Conard.

Sophomore Kate Donnellan scored the game’s first goal with 9:52 remaining in the first quarter. Thibeault gave the Cards a 2-0 lead on Conard, scoring off a penalty corner with 14:06 to go in the second quarter. Junior Olivia Caminiti assisted on Thibeault’s tally.

Mueffelmann, who will play field hockey at Boston College next year, scored off a Thibeault assist at the 11:51 mark of the second quarter, making it 3-0. Mueffelmann’s goal with 7:41 to go in the second quarter gave GHS a 4-0 advantage heading into halftime.

“It was a great win today finishing out our games on our home field,” Greenwich coach Megan Wax said. “Everyone contributed and gave it their all.”

The Cardinals added three second-half goals, getting another goal from Mueffelmann and one apiece from junior Libby Zola and Clara Ojea Quintana.

Junior goalie Kelly Janssen made two saves for the Cardinals, who play Darien in Friday’s quarterfinals at 2 p.m.

“Our ball movement was beautiful and selfless,” Wax said. “We are looking forward to our second round game.”