$7,500+ in Prizes

Get in the Game

It’s easy to join the RotoGrinders MKF Fantasy Challenge: just submit the email address you use on Monkey Knife Fight. Opt in once and you’re set for the rest of the season!

Don't have a Monkey Knife Fight account? Sign up nowand claim a 100% instant deposit match up to $100 using promo code GRINDERS.*

Fantasy Challenge

How to Play

Sign Up

Submit your email address on this page to join the RotoGrinders Fantasy Challenge.


Enter at least one $2+ Fantasy Challenge contest on MKF for specified NFL game days.


The Top 20 Fantasy Points Totals each week win, with 1st place getting $250 in MKF Dollars & more!

There is no limit to how many MKF Fantasy Challenge contests you can enter each RotoGrinders Fantasy Challenge Game Day. Your three highest Fantasy Points Totals each week will be eligible for Weekly Prizes and your highest overall Fantasy Points Total will be eligible for End of Season prizes.  

Weekly Prizes

The top MKF Fantasy Challenge contest point totals for RotoGrinders Fantasy Challenge Game Days will win prizes.

End of Season Prizes

The top MKF Fantasy Points Totals have a shot at huge end of season MKF & RotoGrinders prizes!

Place Prize
1 $250 in MKF Dollars, 
1 month of RG Premium NFL (or NBA on season launch) ($49.99 value, and RotoGrinders T-Shirt
2-3 $100 in MKF Dollars
4-5 $50 in MKF Dollars
6-10 $20 in MKF Dollars
11-15 $10 in MKF Dollars
16-20 $5 in MKF Dollars
Place Prize
1 $2,000 in MKF Dollars,  RG Premium NBA Season Pass ($300+ value), and RotoGrinders T-Shirt
2 $1,000 in MKF Dollars
3 $750 in MKF Dollars
4 $500 in MKF Dollars
5 $350 in MKF Dollars

Promotion Details

To be eligible for the RotoGrinders Fantasy Challenge, users must:

  • Be eligible to play on Monkey Knife and have an account in good standing
  • Opt in on this page.

Once a user opts in to the RotoGrinders MKF Fantasy Challenge once, they're eligible for the remainder of the season. 

The following are RotoGrinders Fantasy Challenge Game Days:

  • Sunday, Oct. 3, 2021 (NFL Week 4)
  • Sunday, October 31, 2021 (NFL Week 8)
  • Sunday, November 28, 2021 (NFL Week 12)
  • Sunday, December 26, 2021 (NFL Week 16)

Any $2 or more buy-in Fantasy Challenge entry for NFL Contests – slates or individual games –  scheduled for, and started on, these dates is eligible to win Weekly and End of Season Prizes.

Each user’s three highest MKF Fantasy Points Totals will be eligible for Weekly and End of Season Prizes.

Tiebreaker will be total wins for all MKF Fantasy Challenge contests entered for the RotoGrinders Fantasy Challenge Game Days. If the tie persists, prizes will be combined for the tied positions and the prizes split evenly between the tied winners (for example, if three users tied for 1st, then the 1st, 2nd, and 3rd place prizes would be combined and split evenly between the three users). In this instance, any non-MKF Dollar prizes will be awarded to the first entry submitted.

Fantasy Challenge scoring is based on the following:

  Fantasy Points
Passing TD 4
Passing Yard 0.04
Interception -1
Rushing TD 6
Reception 1
Receiving Yard 0.1
Receiving TD 6
Return TD 6
2 Point Conversion 2
Fumble Lost -2

More information on Fantasy Challenge scoring »

Results will be updated and prizes awarded on the Monday immediately following each RotoGrinders Fantasy Challenge Game Day.


*Match awarded in MKF Dollars.

MKF Dollars are used for contest entry on Monkey Knife Fight. MKF Dollars have no cash value, are not eligible for withdrawal, are not transferable, and may be reclaimed by MKF if they go unused for a period of more than one (1) month. MKF Dollars will be invalidated across all accounts if a user opens more than one account.