While The Undertaker's WWElegacy is tied heavily to his 23-1 record atWrestleMania, he's been a big part of SummerSlam throughout his career as well. Taker has headlined WWE's biggest party of the summer on five separate occasions, and even showed up three times when he wasn't booked for a match. While virtually nothing has been said on WWE programming about The Undertaker sinceWrestleMania 32, could he make a surprise return atWWE SummerSlam 2016?

NeitherMonday Night Raw norSmackDown Liveselected Taker in the recentWWE Draft, so he's technically a free agent. Is there anyone on either roster that WWE could already be planning to have as Undertaker's opponent atWrestleMania 33?

Whether participating in a match or making a surprise appearance, The Undertaker always makes a big impact when he shows up at WWE SummerSlam.

What follows is one part ina series of WWE SummerSlamhistory articles, in which we take a look at a WWE Superstar's record (such as Brock Lesnar, Seth Rollins,Dean Ambroseand Dolph Ziggler) atSummerSlamand see what their past experiences might tell us about this year's event,WWE SummerSlam2016 on August 21.

Win-loss record atWWESummerSlam

Undertaker is twice as likely to win atSummerSlam as he is to lose, with an overall record of10-5.

In 2000, he had a match against Kane that was ruled a "No Contest" since the bell never rang, so he should have had 16 total matches. He's competed in a handful of matches atSummerSlam with stipulations, including a Rest In Peace Match (otherwise known as "No Disqualification Match"), Casket Match, Boiler Room Match, Steel Cage Tag Team Match and a Hell in a Cell Match.

He's headlined the event three times without a title on the line, including his match againstBrock Lesnar last year and against an alternate version of himself in 1994.

WWE SummerSlamtitle matches

Despite being a main event level talent a year after he debuted in the WWE, The Undertaker has only fought for a title atSummerSlam on five occasions.

In 1997, he lost theWWF Championship to Bret Hart, and failed to capture the same title fromSteve Austin a year later. In 1999, he was one half of The Unholy Alliance, teaming with The Big Show to take the WWF Tag Team Championship from Kane and X-Pac. AtSummerSlam 2001, he won a tag title unification match with his brother Kane. In 2004, he challenged JBL for the WWE Championship but came up short.

Worthy competition atSummerSlam

Undertaker has faced a wide variety of opponents atSummerSlam. The list includes some forgettable guys like Kamala, Giant Gonzalez, Kama and Test. But there are a lot of current and futureWWE Hall of Fame inductees on the list, including Brock Lesnar, Mankind, Bret Hart, Steve Austin, Kane, Diamond Dallas Page, JBL, Randy Orton, Edge and A-Train.

Predictions forSummerSlam2016

WWE likes to promoteSummerSlamas the second biggest show of the year. It's no surprise that The Undertaker has found his way into the event even when he isn't scheduled. His first appearance in 1991 was during the wedding celebration betweenRandy Savage and Miss Elizabeth, which he and Jake "The Snake" Roberts crashed. In 2009, he showed up to chokeslamCM Punk after he defeated Jeff Hardy in the main event. The following year, he showed via casket to sneak up on Kane.

It's certainly not out of the question that The Undertaker could show up atSummerSlam this year.

Since he's not signed to either brand, he could get involved withJohn Cena fromSmackDown Live or reignite his feud withBrock Lesnar onMonday Night Raw. While the surprise certainly would be big news for WWE, it's probably not going to happen atSummerSlam this year.

WWE SummerSlam2016airs live, August 21, exclusively on the WWE Network.SummerSlamwill be available to stream on-demand immediately via the WWE Network.The SummerSlamKick-Off Show begins at 6/5c.

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