EDEN PRAIRIE, Minn. -- Fair or not to now-fired coach Leslie Frazier, the Minnesota Vikings have had a glaring void at quarterback since he was hired.

General manager Rick Spielman said he's confident he will solve the problem, but he also acknowledged Monday his prior lack of success at doing so.

"I haven't got it right yet," Spielman said. "We've worked as hard as we could to try to get that right."

Spielman has had full charge of the roster for the past two seasons and been a chief decision-maker on the draft with the Vikings for seven years. He said he takes full responsibility for the personnel decisions -- which include taking Christian Ponder with 12th overall pick in 2011 -- that shaped the roster Frazier was given. Ponder was one of seven quarterbacks to start at least one game in Frazier's three-plus seasons with the team.

Spielman also had an underwhelming record in Miami, where in his time running the personnel department he also failed to deliver a trustworthy starter at the sport's most critical position. His most-maligned move was to trade a second-round draft pick and invest a three-year contract in A.J. Feeley, who struggled in 2004 for the Dolphins.

First, Spielman has to hire Frazier's replacement. Then he must turn his focus toward the market and the draft, with the importance of procuring at least a solid long-term starter as pressing as ever. The Vikings finished 5-10-1, and Matt Cassel either started or finished all five of the victories. Twice, he relieved an injured Ponder.

Ponder has one year left on his contract, as does Cassel, who can opt out of his early to become a free agent. Josh Freeman, signed in October for an awkward midseason tryout, almost certainly won't return after taking one turn on the carousel and producing the worst passing performance of the season for a team that had many bad ones.