O'Reilly, 24, has four goals and nine assists in 22 games for the Preds this season. He was selected by Nashville in the fifth round (No. 150) of the 2005 Entry Draft.
Alzner, 22, has a goal and two assists for the Capitals, who earned a 3-2 shootout victory against the Carolina Hurricanes on Sunday. Alzner was Washington's first-round pick (No. 5) at the 2007 Entry Draft.
Also scheduled to appear to speak with co-hosts Don La Greca and Stan Fischler are TSN's Bob McKenzie and former Columbus Blue Jackets coach Ken Hitchcock.
NHL Live! is broadcast from the NHL Store Powered By Reebok in New York City.