Ellis was signed as a free agent in July to compete with Mike Smith to be Tampa Bay's No. 1 goaltender. Smith is out for at least a week because of a broken right ring finger.
Dallas' Andrew Raycroft stopped 16 shots in the first period and a half before Brent Krahn took over. Krahn, competing with Raycroft for the backup job behind Kari Lehtonen, made 11 saves the rest of the way.
Lightning defenseman Matt Smaby left in the first period with an upper body injury and didn't return.
Copyright by STATS LLC and The Associated Press
Arena: American Airlines Center Location: Dallas, Texas
Referees: Justin St. Pierre, Rob Martell Linesmen: Jonny Murray, Pierre Racicot
Attendance: 9,527 (51.4% full)
Adam Hall 1 Assist: Dana Tyrell, Nate Thompson
Dominic Moore 1 Assist: Ryan Malone, Scott Jackson
Aaron Gagnon 1 Assist: Tomas Vincour, Brian Sutherby
Adam Hall 2 Assist: Dana Tyrell, Scott Jackson
Philip Larsen 1 Assist: Tomas Vincour, Aaron Gagnon