(Ticker) -- Perhaps Dwayne Roloson is not the missing piece to the Edmonton Oilers' playoff puzzle.
Roloson allowed four goals, including the game-winner by defenseman Rostislav Klesla in the final minute of overtime, as the Oilers dropped a frustrating 4-3 defeat in decision to the Columbus Blue Jackets.
Acquired in a trade with Minnesota on Wednesday, Roloson struggled in his first outing with Edmonton, yielding three third-period goals in Thursday's 5-2 loss to San Jose.
The 36-year-old was not much better Saturday as the Oilers lost for the seventh time in nine games, suffering a potentially devastating loss to a Blue Jackets team that entered with a league-low 158 goals.
Roloson allowed the Blue Jackets to tie it at 3-3 midway through the third period. He made a stop on Rick Nash's deflection but was unable to locate the puck. Nikolai Zherdev emerged from behind the net and buried the loose puck for his fifth goal in as many games.
Things did not get much better in overtime for Roloson, who struggled throughout handling the puck.
On a clearing attempt late in the extra session, Roloson collided with a teammate and gave away the puck to Zherdev. Roloson caught a break when the shot sailed over the empty net, but Klesla retrieved the puck in the corner and fired a shot from behind the goal line that deflected off the goalie and in.
Ryan Smyth, defenseman Jaroslav Spacek and Michael Peca scored for Edmonton, which also got two assists from newcomer Sergei Samsonov, acquired in a trade with Boston on Thursday.
Marc Denis made 24 saves and Trevor Letowski and Sergei Fedorov tallied for Columbus, which had dropped five of seven.