Par4QC
Let's look at the rules.
5.1 Meaning of Round
A “round ” is 18 or fewer holes played in the order set by the Committee.
When a round ends in a tie and play will go on until there is a winner:
Tied Match Extended One Hole at a Time. This is the continuation of the same round, not a new round.
Play-off in Stroke Play. This is a new round.
A player is playing his or her round from when it starts until it ends (see Rule 5.3), except while play is stopped under Rule 5.7a.
When a Rule refers to actions taken “during a round,” that does not include while play is stopped under Rule 5.7a unless the Rule says otherwise.
So, looks like the playoff was a new round.
5.2 Practising on Course Before or Between Rounds
For purposes of this Rule:
“Practising on the course ” means playing a ball, or testing the surface of the putting green of any hole by rolling a ball or rubbing the surface, and
The limitations on practise on the course before or between rounds apply only to the player, not to the player’s caddie.
a. Match Play
A player may practise on the course before a round or between rounds of a match-play competition.
b. Stroke Play
On the day of a stroke-play competition:
A player must not practise on the course before a round, except that the player may practise putting or chipping on or near his or her first teeing area and practise on any practice area.
A player may practise on the course after completing play of his or her final round for that day.
See Committee Procedures, Section 8; Model Local Rule I-1 (in either form of play, the Committee may adopt a Local Rule prohibiting, restricting or allowing practice on the course before or between rounds).
Penalty for Breach of Rule 5.2:
Penalty for first breach: General Penalty (applied to the player’s first hole).
Penalty for second breach: Disqualification.
