Elk Grove looked to a bright future after York ended its season, 54-47, in the first semifinal game Tuesday night of the Class 4A Lake Park regional.
The Grenadiers, seeded 14th in the Schaumburg sectional, finish the season 13-16.
The fourth-seeded Dukes (22-8) advance to Friday's 7:30 p.m. title game against fifth-seeded Lake Park, a 57-50 winner over Bartlett in the second semifinal.
"One of our goals this season was to show people we can play and we did that last night (a 71-65 win over Willowbrook) and tonight," said Elk Grove coach Anthony Furman. "They (York) were up 18-10 and then it was a one- to three-possession game the rest of the way until they pulled away late."
The Dukes led 15-10 after the opening quarter on 7-of-12 shooting while the Grenadiers were a cool 3 of 11.
Elk Grove warmed slightly to 5-of-11 in the second quarter while York chilled to 3-of-12. The teams were tied at 24-24 at intermission.
York led 36-33 after three quarters.
Junior Kishan Patel and senior Zachary Solorio led the Grenadiers with 15 points each. David Cohn, a junior, paced York with a game-high 21 points.
"Our future is good. We're young. We have returning guards, returning guys that are 6-5. The guys that played tonight will be back,"Furman said.
Proviso East 68, Hoffman Estates 43: Senior Austin Terry scored 12 points and junior Connor Schwarz added 8 points as No. 17 Hoffman Estates (9-16) lost to host Proviso East (27-0) in the 4A regional semifinal in Maywood. Sterling Brown scored 16 points and Keith Carter added 12 points for the Pirates, who are the top seed in the Schaumburg sectional.
"They're very good," said Hoffman coach Luke Yanule. "We fought back late and we competed and didn't quit so that was good. It was a great game for our program to play against that caliber of a team and talent."
Morton 69, Leyden 44: No. 10 Morton (14-13) emphatically avenged a 10-point loss nearly a month ago in the Lyons 4A regional semifinal as Rocco Belcaster scored 26 points. Patrick Listwan scored 10 points for Leyden (16-11).