10 strangest Super Bowl LIII prop bets: From Tony Romo's acumen to Adam Levine's shirt

Super Bowl LIII between the Los Angeles Rams and New England Patriots is rapidly approaching, which means it's time to revisit all of the annual Super Bowl traditions: Footballsquares. A new wave of commercials. And, of course, outrageous prop bets.

Off-the-field proposition bets, as they are more formally known, aren't legal in Las Vegas, where sports books are required to stick to in-game action. But  each year, a number of online outlets give gamblers a means of betting on the strangest and most obscure parts of the Super Bowl, from the attire of halftime performers to specific mentions within the television broadcast.

Here are some of the weirdest proposition bets for Super Bowl LIII in Atlanta on Sunday, courtesy of online sportsbook Bovada LV.

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How long will it take Gladys Knight to sing the national anthem?

Over 1 minute, 47 seconds: 5/8

Under 1 minute, 47 seconds: 6/5

Will any player take a knee during the national anthem?

Yes: 3/1

No: 1/5

How many plays will CBS analyst Tony Romo correctly predict before the snap?

Over 7.5: 5/6

Under 7.5: 5/6

How many times will the CBS television broadcast mention Rams coach Sean McVay's age?

Over 1.5: 10/19

Under 1.5: 29/20

What will be the jersey number of the player who scores the first touchdown?

Over 26.5: 5/7

Under 26.5: 1/1

What will be the color of the liquid poured on the game-winning coach?

Green or yellow: 9/4
Orange: 4/1
Red: 6/1
Clear: 11/5
Blue: 4/1
Purple: 10/1

Will a non-QB throw a touchdown?

Yes: 5/2

No: 1/4

Will a touchdown be overturned by replay?

Yes: 3/2

No: 1/2

Will either kicker hit the post or crossbar on a missed field goal or extra point attempt?

Yes: 7/2

No: 1/6

What will be the predominant color of Adam Levine's top at the start of the halftime show?

Black: 2/3

Any other color: 11/10