The Vikings wined and dined free-agent offensive tackle Andre Smith on Sunday night, taking him to their usual spot, Manny's Steakhouse downtown. And on Monday, they gave him a tour of Winter Park and showed him how U.S. Bank Stadium is shaping up.

But they couldn't convince Smith to sign a contract before he left Minnesota.

Smith could still end up agreeing to join the Vikings. But he plans to visit Arizona first. Tampa Bay is reportedly interested in him, too.

Even after landing free-agent guard Alex Boone last week, re-signing guard Mike Harris and keeping tackles Matt Kalil and Phil Loadholt around, the Vikings still are looking to improve the talent level and foster fiercer competition on the offensive line.

They have turned their focus to Smith, the sixth overall pick in the 2009 draft.

Smith had spent his entire career with the Bengals, who employed Vikings coach Mike Zimmer as their defensive coordinator for Smith's first five seasons. The 6-4, 335-pound right tackle has made 73 starts in seven seasons.

It is, of course, not preferable to let a free agent leave the building without a contract, but that does not mean Smith won't join the Vikings eventually. Last spring, cornerback Terence Newman signed with the Vikings a week after he visited Winter Park.

Robinson leaves

The Vikings lost their first unrestricted free agent to another team Monday, but it shouldn't come as a surprise because they made no real effort to keep that player.

Cornerback Josh Robinson, who started 21 games in his four years with the Vikings, signed a one-year deal with the Buccaneers.

After signing his contract, Robinson took to Twitter to express gratitude to the Vikings, writing "Thankful for 4 awesome years in MN where I was able to live out a dream!"

The 25-year-old was a third-round draft pick in 2012. He started six games as a rookie and 10 more in 2013. But at just 5-10, Robinson did not fit the prototype of what Zimmer was looking for in an outside cover man. He started five games as the third cornerback in 2014 and was the No. 5 corner last season.

Griffin signs

The Vikings signed veteran safety Michael Griffin to a one-year, $2.5 million contract, presumably so he can be a short-term solution next to Pro Bowl safety Harrison Smith. But Griffin said he has been given no guarantees that he will start.

"The way I look at it, I'm a team player and I'm a humble guy. You got to compete," he said on a Monday conference call. "There is nothing in this league that is given to you."

Griffin twice was selected to the Pro Bowl while playing for the Titans, the team that drafted him in the first round in 2007. But they cut him last month.

"It was a blessing to be there nine years. There's no hard feelings," Griffin said. "But that's behind me. It's set in stone, written in stone. Right now, I'm a Minnesota Viking."

Paid for play

Offensive tackle T.J. Clemmings as a rookie led the Vikings in performance-based pay for the 2015 season. He was awarded $359,396, according to a league source. That was the second-highest total in the league, trailing only Broncos center Matt Paradis.

The NFL awards performance-based pay as a way to supplement players whose playing time is disproportionate to their salary. Stefon Diggs was second on the Vikings in performance-based pay, followed by fellow receiver Adam Thielen, defensive end Danielle Hunter and middle linebacker Eric Kendricks.