In the girls game, Purdy topped Verona 66-32 behind a 30-point performance by Roller.
Verona took a 1-0 lead on Tristan Carrasquillo's free throw 35 seconds into the contest only to see Roller score the next 10 points on a free throw and three treys. Roller sank five of her game-high seven 3-pointers in the first quarter as the Lady Eagles quickly built a 24-9 first period advantage.
Purdy used a zone defense most of the evening to harass and disrupt the Lady Wildcats. The Lady Eagles outscored Verona 13 to 4 in the second period to lead 37-13 at halftime.
"Plain and simple, we got outworked, outhustled, outrebounded and beat tonight," said Verona coach Ryan Yates. "Purdy is a good team, and Grant does a good job. We have to get back to the basics of the game. We have got to go to work."
Scoring for Verona were: Carrasquillo, 16; Taylor Pinkly, 6; Shelby Barsotti, 4; and Leann Hesemann, Jessica Youngberg and Rachel Welters, 2 points apiece.
"We had three girls in double figures tonight, and that is a good sign," said Young. "I thought Katie Hughes and Mattie White played well. They both do a good job on the boards and help make this team better."
Scoring for Purdy was: Roller, 30; White and Taylor Moller, 10 each; Rachael Neill and Kristyn Cornman, 4 apiece; Billie House and Katie Hughes, 3 each; and Jayse Henderson, 2.
In the varsity nightcap, the Purdy Eagles held off a late charge by Verona to cling to a 57-53 victory.
"We knew Verona is a team that can get on a hot streak," said Purdy coach Tommy Egan. "They can score points in bunches. Devon (Bennett) played very well for us tonight. He has strung together four or five solid games in a row."
The Eagles opened the game red hot and quickly established a 13-2 lead spurred by four Bennett 3-pointers. Purdy doubled up Verona and led 20-10 at the first quarter's conclusion.
Each team traded buckets in the second and third periods with Purdy outperforming the Wildcats 12 to 11 in the second period and Verona outdueling the Eagles 12 to 11 in the third. Purdy took a 43-33 lead into the final period.
The Eagles extended the lead to 45-33 and looked like they would pull away from the Wildcats early in the fourth, but back-to-back treys by Cody Ernsberger and Wesley Kissinger slashed the Purdy lead in half with four and a half minutes left.
A three-point play by Verona's Seth Losack with 1:40 left in the game cut Purdy's lead to 54-50. Garen Nelson then hit one of two free throw attempts to give the Eagles a five-point advantage with a minute to play.
Ernsberger drilled a three-pointer from deep in the left wing to pull the Wildcats within two at 55-53 with 40 seconds left but the Eagles' Cameron Terry calmly sank two game-clinching free throws to provide the final margin of victory.
"We needed this game," said Egan. "We talked about the need to win this contest for the last three days. I am proud of the boys. They showed up and took care of business."
Scoring for Purdy were: Bennett, 21; Drew Williams, 16; Terry, 14; Nelson, 5; and Alex Haworth, 1.
Scoring for Verona were: Kissinger, 18; Ernsberger, 13; Losack, 9; Nick Washam and Larry Patterson, 6 each; and Tomas Estrada, 1.
"Credit Purdy. They came out and jumped on us early," said Verona coach Brad Stewart. "We made a couple of defensive adjustments in the second half that helped put us in a position to win. As a coach, you want to have your team in position to win games. We just didn't get it done tonight."
Both Purdy boys and girls squads travel to Southwest on Friday. Tipoff is set for 6 p.m.
Verona travels to Thomas Jefferson on Friday. Game time is set for 6 p.m.