The injury that resulted in Lehtera's exit in Thursday's win over the Predators and out of Friday's game against the Hurricanes is believed to be an upper-body concern, KMOV.com reports. Lehtera sustained the injury in the third period of Thursday's game when he ran into the end boards. The center will travel with the Blues on their two-game road trip, suggesting the team is confident it's just a day-to-day concern, but he won't be available until the second match of that trip Sunday in Washington at the earliest. Ty Rattie was recalled from AHL Chicago to provide the Blues with some depth in the interim, but it's fourth liner Ryan Reaves that is expected to see the greatest influx of ice time with both Lehtera and Patrik Berglund out for at least one game.