Find Your Ball · Dunlop
Dunlop Grand Prix (Extra Duty)
Dunlop Grand Prix (Extra Duty) is best for hard court and turf and indoor, players who want a lively ball, frequent play (it lasts).
Facts
Brand
Dunlop
Model
Grand Prix
Duty
Extra Duty
Type
Pressurized
Built for
hard court, turf, indoor
Tier
Mid
ITF approved
Yes
Price
$4.79 ($4.79 / 3-ball can; $109.99 / 24-can case)
Available
US
Player reviews
4.4/5 (38 reviews)
What to know
A long-running US-market Dunlop line and the official ball of ITA college tennis, with a woven extra-duty felt that resists hard-court wear. Club leagues that adopt it praise its longevity, though some cans go soft within a couple hours of heavy hitting.
- Holds up well — fewer cans over a season
- Lively off the strings
- Stays playable for about 2 weeks before it goes flat
When to open a fresh can
About every 2 weeks of regular play, if you want consistent bounce — this ball's pressure fades gradually like any pressurized ball.