When Alex Killorn arrived with the Tampa Bay Lightning early in the lockout-shortened season last year, it was evident right away he belonged in the NHL. After four years at Harvard University, Killorn signed with the Lightning and joined Tampa Bay’s farm team in Norfolk for the 2011-12 run to the Calder Cup championship. Last season, due to the lockout, Killorn spent the first half of the year in Syracuse and was not among those summoned to attend abbreviated training camp once the labor situation was resolved. But a month in, Tampa Bay brought Killorn up and he’s been a fixture in the lineup ever since, finishing last season with seven goals and 19 points in 38 games. A month into this season Killorn, 24, was promoted to first-line left wing playing with Marty St. Louis and Steven Stamkos, and fit right in by picking up two goals and five points in the first two games on the top line. It seems every situation has been a seamless transition for Killorn, as he entered Friday’s game at Anaheim fourth on the team with six goals and 15 points. Now, necessitated some by the loss of Stamkos, Killorn hopes to slide right into another new spot — playing center, which he did for the first time at the NHL level Thursday in San Jose. “I felt pretty good out there,” Killorn said. Killorn played center in college as well as part of the time last season in Syracuse while Jon Cooper was still coaching the Crunch. But while it’s not a new position for him, there are some obvious adjustments.