Grimsby have already claimed a Premier League scalp this season and will be hoping lightning strikes twice when they host Wolverhampton Wanderers in the FA Cup fourth round.
The Mariners enjoyed one of the biggest results in their history when they dumped Manchester United out of the EFL Cup on penalties back in August after a thrilling 2-2 draw.
They also eliminated Championship side Sheffield Wednesday before Brentford brought their adventure to an end with a 5-0 thrashing at Blundell Park.
Now the League Two side find themselves up against a top-flight side again, although their path to the FA Cup fourth round has been kind, knocking out Ebbsfleet, Wealdstone and Weston Super-Mare.
They will still fancy their chances against a Wolves team who are doomed to relegation after winning just one of their 26 games so far in the Premier League.
But with the league campaign a lost cause, Rob Edwards' men will be focusing on an FA Cup run so I reckon Wolves will field a strong side for this one.
How the bookies view it: Wolves at the door
Wolves haven't been playing badly in recent weeks so it's no surprise to see them around 1/2 with most firms. Grimsby are 5/1 outsiders and the draw at 90 minutes pays 4/1 with Bet365.
Head to head: Long time no see
You have to go back to season 2002/03 for the last time these sides faced off. They were both in the second tier at the time and Wolves won 1-0 at Blundell Park after dishing out a 4-1 beating at Molineux.
Players to watch: Vernam out to hog the headlines
Midfielder Charles Vernam has chipped in with eight goals this season for Grimsby and netted in the FA Cup win over Weston Super-Mare. He's 5/1 at Paddy Power to add to that tally against Wolves.
Wonderkid Matheus Mane has been in fine form for Wolves and he could make the difference in this cup tie. He's evens at Bet365 for a goal or assist which looks good value, provided he isn't rested.
Backed a player to find the net? Check our Goalscorer Betting guide to see how the markets work and where to find value.
Probable line-ups
Grimsby have doubts over Sam Lavelle, Jude Soonsup-Bell, Christy Pym, Cameron Gardner while Jason Svanthorsson and Doug Tharme definitely miss out.
Wolves have a relatively clean bill of health, although Toti Gomes, Leon Chiwome and Hwang Hee-Chan could miss out again.
Grimsby: Smith, Sweeney, Rodgers, Lavelle, McJannet, Walker, Khouri, Kabia, McEachran, Vernam, Cook.
Wolverhampton Wanderers: Jose Sa, Krejci, S Bueno, Mosquera, H Bueno, J Gomes, R Gomes, A Gomes, Armstrong, Arokodare, Mane.
Anything else catch the eye?
Grimsby head into this tie in fine form, going 10 games without defeat, so it's a test of mettle for Wolves. But Edwards seems to be doing a decent job at Molineux so I'd be surprised if there was another shock.
With the Premier League such a short price it's hard finding value but combining a Wolves win with over 2.5 goals pays a decent 21/20 at William Hill.
Grimsby won six corners in that famous victory over Manchester United so there could be some value in backing over 10 match corners at 11/10 with Bet365.
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