Evans finished with 24 points and 10 rebounds and Ellis made 6 of 12 shots, all from 3-point range, in 26 minutes of action. Jordair Jett added 14 points and Grandy Glaze chipped in 10 for Saint Louis, which led wire to wire.
Thomas' layup 2 minutes into the second half trimmed the deficit to five, 44-39, but Saint Louis used a 9-3 run to pull away. The Rams never got any closer than five.
Saint Louis (17-5, 6-2) outscored Fordham 44-32 in the paint and turned 12 Ram turnovers into 17 points. The Billikens dished out a season-high 20 assists with just five turnovers.
Washington State's trio of Josh Hawkinson, Conor Clifford and Ike Iroegbu have withdrawn from the NBA draft and will play their senior season with the Cougars.
Gonzaga center Przemek Karnowski, who missed most of last season with a back injury, says he is returning for another year.
Wisconsin forward Nigel Hayes has withdrawn from the NBA draft and will return to the Badgers for his senior season.