Possible Clues:

• /8 across Today's milestone. That's a lot of Simplex crosswords
• Badminton goal
• Like many a high school sophomore
• Square root of two hundred and twenty-five
• Film type spelled out in tableaux vivants in different form
• ... number getting fit, that'll keep following, even briefly
• One point, in tennis
• The outgoing year, briefly
• Product of two primes
• With 39 Across, quarter of an hour