Apprentice standout Rosie Napravnik celebrated her 18th birthday in style by riding two winners during Thursday's Laurel Park card. The second victory of the afternoon was the 100th victory of her young career, which began last June."I've had a great birthday," said Napravnik, who rode Touchdown Run ($4-fourth) and He's A Mystery ($4.20-sixth) to victory this afternoon. "Winning the 100th of my career is icing on the cake."Napravnik leads all riders during the winter meeting with 29 wins, which ranks 11th nationally.