Karina Smirnoff and Brad Penny split

Dec 6, 2011 at 10:52 a.m. ET

Deja vu? Dancing with the Stars champ Karina Smirnoff has called off another engagement. The ballroom star and Detroit Tigers pitcher Brad Penny are going their separate ways after a two year romance, insiders say. What went wrong?

Dunzo! Dancing with the Stars pro Karina Smirnoff is a single woman again after calling time on another engagement.

Smirnoff, 30, has split from her fiancé, Detroit Tigers pitcher Brad Penny, Us Weekly has learned, citing someone close to the former couple.

Penny and Smirnoff were introduced by UFC fighter Chuck Liddell, a mutual friend. They began dating in October 2009.

The split news will come as little surprise to observant DWTS fans. Karina is still riding high off the victory of winning her first Mirrorball Trophy. But during her emotional run to the Dancing championship with partner J.R. Martinez, Penny was never spotted in the audience.

The pair had recently postponed their January wedding plans due to their busy schedules.

"They're just different people," a source told E! of the recent breakup.

The fleet-footed Dancing with the Stars stunner revealed her engagement to Penny, 33, in November 2010. The announcement came just a nanosecond (ok, ok, a year) after Karina put the kibosh on plans to marry DWTS castmate-turned- acrimonious ex Maksim Chmerkovskiy.

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"We kept it quiet because my family is in New York and Brad's family is in Oklahoma so we kind of wanted them to come out and celebrate and be a family first before we let the cat out of the bag," Karina told People magazine at the time.

Penny got down on one knee at a restaurant in Malibu and presented her with a 4 1/2-carat diamond ring, a blushing Karina explained. She debuted the sparkler at a party at the Las Vegas nightclub Tao a few weeks later.

"I was in the middle of the show and had no clue what was cooking behind my back," Smirnoff smiled lovingly.

"The dinner meeting was set up at a restaurant in Malibu. When [my manager and I] got there, it was completely empty. She excused herself to take a call and while I was sitting there alone, Brad came in. I had crazy hair and black lipstick on and was just concerned about looking like the Bride of Frankenstein," she added.

"Even after Brad got down to one knee and opened the box with the ring, it still didn't register."

Image courtesy DJDM/WENN.com