The Seattle Times (Jayda Evans) reports: The latest game to hit Seattle will be 3BA International, a proposed three-on-three basketball league whose rules emphasize speed and stamina. Sonics legend Shawn Kemp will play in the Seattle vs. Portland exhibition game set for 7:30 tonight at KeyArena. “It’s the Arena Football version of basketball,” said former NBA player A.C. Green, who will coach the Portland team…  Teams made up of aspiring pros and former college players average about 150 points a contest. KeyArena will be re-formatted for the players to play on a league-regulated court that’s 50 feet wide and 72 feet long, using an 18-second shot clock.