28a 2500th - "This is it!"
23d The 22 - (part of rugby pitch) - t(ime) + he + (Catch) 22 (or the area in which a player can catch the ball and "mark" it) (??)
May I add here apologies to a couple of Q'ers to whom I responded that this referred to a cricket pitch - it was all I could think of at the time & I suddenly thought of rugby last night! Or am I now confusing myself?.. :-)