Roll over to Zoom

Pearl Reactive Bowling Ball

They say it’s just a game. Does it look like I play games?

Imbeciles! How dare they? Their ignorance gnaws at me like millions of microscopic fleas, just biting and biting until I think I’m going to SNAP! Those fools are clueless, and yet they whisper behind my back that I’ve lost touch with reality. You know what’s real? My mad skills at dismembering the pins in almost any lane condition. Crazy? Oh, I’m crazy alright – crazy good!

Read More


I know people call me strange…weird…not normal. Yet do they try to get to know me, the person I am inside? NO! Their feeble minds are incapable of comprehending my complex inner workings – my ingenious Middle Roll 70™ core. But, that’s OK. The less they know, the easier it will be to achieve absolute supremacy on the lanes.


When they look at me, all they see is a mass of neon green and white. They have no clue I’m made with the new 61MH™ pearl reactive coverstock to help me ease through the front part of the lane. Their closed minds only give me more power. Unsuspecting idiots.


My dominance reigns on lanes with medium-heavy oil. Nothing gives me more pleasure than swooping in and taking my opponents by surprise with my speed and strength at obliterating the pins. So naïve, so sure of themselves, so ready for me to crush their spirits.








Spread the Word

Deranged™ Bowling Ball Technical / Specs

Learn More

Coverstock Name 61MH™
Coverstock Style Pearl
Coverstock Type Reactive
Weight Block Middle Roll 70™
Color Neon Green Pearl / White Pearl
Finish 1500-grit Polished
Durometer 73-75 on D-Scale
Flare Potential 6"+ inches/Medium-High
Weights 12lbs - 16lbs
Release Date 08/13/13


Weight Radius of
Differential PSA Differential
16 2.50 0.041 n/a
15 2.50 0.043 n/a
14 2.53 0.042 n/a
13 2.59 0.045 n/a
12 2.65 0.035 n/a

Download the Tech Sheet

Lane Comparison

View The Many Paths
to Glory.

Compare the shot shapes of any two balls in the current Roto Grip lineup by choosing your style, any lane condition and the two balls you want to see go head-to-head.

Your Style

Lane Condition

Balls to Compare


Career high game and series with Deranged!
March 19th was a night my youngest sister Keri will not soon forget. While bowling in the Wednesday Ladies...
Read the story
Jr. bowler shoots first and second 300's with the Deranged
Zach Wojciechowski of Lubbock Tx.,a jr. bowler shot not only his first but his second 300 using the Deranged....
Read the story
Came out on top using the Deranged
Won the super singles tournament at Jersey Lanes located in Linden, NJ 3 weeks ago.
Read the story
View All Stories

Honor Scores

300 Game
Robert Gaither
Fort Meade, Maryland
Read the story
300 Game
Blake Wilson
Roswell, Georgia
Read the story
800 Series
Daren Hall
Burlington, Vermont
Read the story
View All Stories

In the News

18 Year-Old David Krol of Missouri Wins Roto Grip Challenge at Orleans!
TAT Roto Grip Challenge
Read the story
2014 True Amateur Tournament Ready To Roll At Orleans
TAT Roto Grip
Read the story
Brian Kretzer Back in The Winner's Circle
Kretzer Regional Win
Read the story
Roto Grip U.S Open Update
U.S Open update
Read the story
Six Separate Qualifying Divisions for 2014 TAT!
2013 TAT
Read the story
Totally Defiant, Deranged, Rumble Are Here!
Totally Defiant, Deranged, Rumble Release
Read the story
World Championships Underway in Las Vegas
World Championships
Read the story
View All News

Recommended Essentials from

View and purchase the complete line of Roto Grip apparel and accessories at

Ladies Fitness Pants
Learn More
Men's Dot Sublimation Jacket
Learn More
Ladies Thunder Polo - Red
Learn More