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Rashard Lewis was expected to be a key reserve for the Dallas Mavericks during the 2014-15 NBA season, but extenuating medical circumstances have nullified the new partnership.

According to Marc J. Spears of Yahoo Sports, the Mavs and Lewis agreed to a one-year contract on July 15. That deal is no longer, however, as the Mavericks voided the contract Wednesday, per Tim MacMahon of ESPNDallas.com.

Donnie Nelson, the Mavericks' president of basketball operations, revealed that the decision was made after a knee ailment was detected during a physical.

"It came to our attention during Rashard Lewis' physical that he is in need of a medical procedure on his right knee," Nelson said. "We wish him all the best for a speedy recovery and continued success in his remarkable career."

Lewis is a 34-year-old, 16-year NBA veteran who has twice been named an All-Star. He is coming off a two-year run with the Miami Heat that saw him capture an NBA title at the conclusion of the 2012-13 campaign.

Though he is no longer the same player who averaged over 20 points per game in three straight seasons for the Seattle SuperSonics, Lewis is a savvy player capable of filling a role on a winning team. He's a career 38.6 percent shooter from beyond the arc, which certainly comes in handy off the bench.

Without Lewis in the fold, the Mavericks are now back in the market for a similar type of player, according to Dwain Price of the Star-Telegram:

In addition to that, Lewis' NBA future is very much up in the air. It is unclear how significant the knee injury is or how long it could potentially put him on the shelf. One can only assume that there are some long-term concerns if the Mavs were unwilling to uphold the contract, though.

Add in the fact that Lewis averaged just 4.5 points per contest last season, and it is only natural to question whether his NBA career may be reaching its conclusion.

Matt Moore of CBSSports.com weighed in on Lewis following the report.

"Lewis, though, turns 35 this month," Moore said. "He's had a hard time staying on the floor the last few seasons and his struggles for the Heat despite a big role played a large role in their fall in the Finals. This may not be the end for Lewis' career, but it's not a good sign."

If this is the end of the line for Lewis, he can rest assured in knowing that he had a great deal of success during his time in the league. His statistical production is impressive as a whole, and he has a championship to hang his hat on as well.

As much as Lewis would have liked to chase another in Dallas, it simply wasn't in the cards.

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