Detailed service rules, legal serve requirements, common service faults, and umpire enforcement.
Service is the most heavily regulated stroke in table tennis:
**Legal Service Requirements:**
1. **Ball Position:**
- Must rest on open palm of free hand
- Palm must be stationary
- Ball must be above table level
- Ball must be behind end line
- Ball must be visible to receiver and umpire
2. **The Toss:**
- Must be nearly vertical (16cm minimum)
- No spin on ball during toss
- Ball must rise and then descend
- Must not be hidden from receiver at any point
3. **Striking the Ball:**
- Must strike ball as it falls
- Contact must occur behind end line and above table
- Ball must bounce once in server's court
- Then bounce once in receiver's court
4. **Free Arm Position:**
- Once ball is tossed, free arm must be removed from space between ball and net
- Must not obstruct receiver's view of ball
**Common Service Faults:**
1. **Illegal Toss:**
- Toss height less than 16cm
- Ball spins during toss
- Toss not nearly vertical
- Ball caught and re-tossed
2. **Hidden Service:**
- Body or free arm hides ball from receiver
- Ball not visible during toss or contact
- Free arm not removed after toss
3. **Incorrect Bounce:**
- Ball doesn't bounce in server's court first
- Ball bounces outside proper court in doubles
- Ball touches net but lands incorrectly
4. **Premature Contact:**
- Ball struck before reaching peak of toss
- Ball struck while still rising
**Umpire Actions:**
**First Service Fault:**
- Warning: "Fault, [specific violation]"
- Service counts as point to receiver if clearly illegal
- Warning if borderline
**Repeated Faults:**
- Point awarded to receiver
- Yellow card for persistent violations
- No "free warnings" in modern enforcement
**Service Let:**
- Ball touches net but service otherwise legal
- Umpire calls "Let"
- Service is replayed
- No limit on service lets
**Doubles Service:**
- Must go from right half court to right half court
- Same toss and contact rules apply
- Diagonal service line rule
**Player Questions During Match:**
- Player can ask why service was faulted
- Umpire should briefly explain
- Player cannot argue or delay match
**Live Scoring Integration:**
- Record service faults for statistics
- Track patterns for coaching analysis
- Note persistent violations for yellow card tracking
Modern service rules heavily emphasize visibility and fairness.