Kenneth Lowe grabbed 11 rebounds for the Phoenix and Jordan Fouse collected 10.
Megan Lukan had a game-high 19 points to go with 10 rebounds, 5 assists and 3 steals. Kaili Lukan had 13 points and 6 steals.
Sykes outscored Milwaukee 22-19 in the first 16 minutes including a stretch of eight straight field goals.
Badgers improve to 3-0 in Big Ten.
Megan Lukan leads the Phoenix with 14 points.
Fouse almost records triple-double against Wright State.
Green Bay opened Horizon League play Monday, hosting Wright State.
Wisconsin 2-0 in Big Ten play
The home team opened the game with a 14-0 run but Davenport, an NAIA school, trailed just 24-13 at halftime.
Freshman Sandy Cohen III had a season-high 12 points, all in the first half.