Turner's the third-highest paid player on the Blazers' roster, yet he's averaging just 9.2 points in 24.9 minutes off the bench for a 13-16 squad.
Rajon Rondo, PG, Chicago Bulls
Rondo's deal ($14 million this season, $13.3 million non-guaranteed for next) isn't terrible compared to a lot of these guys, but he's averaging just eight points and 6.9 assists for a .500 Bulls team that's lost three straight.
Timofey Mozgov, C, Los Angeles Lakers
This was the most-mocked free-agent signing of the summer, and with good reason. The rebuilding Lakers made Mozgov the team's second-highest paid player (behind Luol Deng, who we'll get to shortly), and the deal worth $64 million over four years seems laughable now that Mozgov is averaging just 8.1 points and five rebounds in 21.2 minutes per game as L.A.'s starting center.
Boban Marjanovic, C, Detroit Pistons
The NBA giant who became a fan-favorite in San Antonio wisely accepted Detroit's offer for $21 million over three years. But he's played only sparingly this season, averaging just two points in five minutes per game in 11 total appearances.
Miles Plumlee, C, Milwaukee Bucks
The Bucks don't feel compelled to play guys who they've signed to large free-agent contracts -- just ask Greg Monroe about that. But Plumlee in his first season in Milwaukee (after inking a deal worth $50 million over four years) is averaging just 2.5 points and 1.9 rebounds in 10.8 minutes per game off the bench.
Caylor Arnold-USA TODAY SportsCaylor Arnold
Chandler Parsons, SF, Memphis Grizzlies
The Grizzlies inked Parsons to a max deal this offseason, but he hasn't come close to living up to it thus far.
Injuries have limited Parsons to appearing in just six games for Memphis this season, and he's averaging a career-worst 7.7 points in 21 minutes per contest after signing a contract worth a reported $94 million this summer.
Luol Deng, SF, Los Angeles Lakers
L.A. signed Deng to provide some veteran leadership to its core group of young players, but he's the team's highest-paid player, averaging a career-worst 7.9 points per game as a member of the starting lineup in 26 minutes per contest.
Bismack Biyombo, C, Orlando Magic
The high-energy big man signed a deal worth $17 million per season with Orlando, but is averaging just six points and 8.1 rebounds in 26.3 minutes off the bench for a team that's 12-17 on the season.
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Festus Ezeli, C, Portland Trail Blazers
Ezeli's deal isn't bad at all, considering he's guaranteed only $7.4 million for this season. But he has yet to play a single game for the Blazers, and there are reports that he'll undergo season-ending knee surgery in the near future.
Joakim Noah, C, New York Knicks
Noah's deal already doesn't look that great, but imagine when we're in its third or fourth year, he's no longer playing and the Knicks are still on the hook for $18 million or $19 million per season.
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Dirk Nowitzki, PF, Dallas Mavericks
Make no mistake, Mark Cuban doesn't regret a single cent he's paid to Dirk Nowitzki over the years, and the two-year deal worth $50 million that the Mavericks signed him to last summer is just fine, despite the fact that injuries have limited him to appearing in just five games this season.
That money was a thank you to Nowitzki for his years of service more than anything else, although Dallas hopes that Dirk will return to action at some point before simply cashing out and retiring as the greatest player in the history of the franchise.