Boston Celtics sign Malik Fitts and Kelan Martin to second 10-day contracts

The Boston Celtics have signed forwards Malik Fitts and Kelan Martin to their second 10-day contracts. Fitts, 24, has competed in 11 NBA games over the past two seasons with the LA Clippers, Utah, and Boston, averaging 0.8 points, and 1.3 rebounds in 4.5 minutes. The California native played in seven games with the Jazz …