94% accurate NTRP predictions. See bump risk, hidden strike count, and exactly what it takes to stay at level or move up — for you and every player you face.
No credit card. We'll email you when your invite is ready.
TR's year-end predictions are ~70% accurate. We're 94%. And we show the things USTA actively hides from you.
Not just a rating estimate — the actual probability you bump up, stay, or bump down. Updated after every match.
USTA tracks your strikes toward auto-bump but never tells you. We make it visible so you're never surprised.
Match yourself against any player at any score. See exactly how each result moves your rating before you step on court.
Every win and loss shows ±impact on your rating. Finally understand why that 6-2 win actually hurt you.
Want to stay at 3.5? We tell you the max wins allowed. Want to bump? We tell you the exact path.
Optimize your lineup with per-court bump risk. Scout opposing teams before lineup submission.
We're onboarding new players gradually. Drop your email and we'll send your invite when your slot opens.
Already part of Jane Forman's community? Your TFE membership unlocks full Sandbaggr Pro automatically. Otherwise, request an invite above.