Throughout the week leading up to Saturday’s Virginia 6A boys’ lacrosse final at Lake Braddock, Robinson senior attackman Chapman Jasien couldn’t even support his slender 140-pound frame on his right ankle.

Jasien rolled the ankle at practice Wednesday and sported crutches and a walking boot while missing workouts Thursday and Friday. After observing his assists leader “walking gingerly” early Saturday, Robinson Coach Matt Curran wasn’t sure Jasien would be able to take the turf at Lake Braddock for the afternoon faceoff against Chantilly.

But Jasien played, and with 2 minutes 10 seconds left in double overtime, he cut backside, collected a feed from all-American Jack Rowlett and fired a stick-side laser to give the Rams (19-4) a 10-9 win over the Chargers and defend Robinson’s title.

“I knew [Rowlett] would be able to draw the double team and look up because he’s a team player,” Jasien said. “He hit me on that feed, and I had the easy part of that.”

Robinson’s path to a title defense was anything but easy. The Rams lost to Chantilly twice this postseason — in the Conference 5 and 6A North finals — and adopted an unfamiliar underdog role entering Saturday’s game.

Robinson beats Chantilly 10-9 in double-overtime for Virginia boys 6A lacrosse title. (Odin Akisoglu for Synthesis/Koubaroulis LLC./The Washington Post)

“When they blew us out in the region, we were pretty much embarrassed,” said Robinson’s Chris White, who recorded a hat trick along with Jasien and Johnny Daniel . “That’s the best word to say. We knew that there was no way that was going to happen again.”

After falling behind 5-2 with 4:14 left in the first half, the Rams responded with four straight goals to take a 6-5 lead into halftime. Evan Hargreaves led Chantilly (20-3) with three goals.

As he repeatedly spurned Chantilly offerings flung at him with season-ending force in sudden-death overtime, junior goalie Ryan Keith described feeling “the weight of the world on my shoulders.”

That weight was removed in the game’s final sequence. Rowlett, who defended the crease for most of the game, saw a rare on-ball opportunity midway through the second extra period. He unleashed a vicious body check near midfield and collected a groundball. As Rowlett careened toward the Chargers’ goal, two defenders pinned him in the corner. He tried to dodge away from a trap but fell. When he pushed up, a streaking Jasien crossed his line of sight.

If memory serves for Curran, Jasien is responsible for every Rams overtime winner in the last three years.

“If he caught the ball, it was going to be in the back of the net, no questions asked,” Rowlett said. “He’s pretty ice cold in those situations.”