The Utah Jazz saw some improvement over three game and there are a few prospects worth taking a longer look at On the final night in Salt Lake City Summer League, the Utah Jazz lost their final game to against the Memphis Grizzlies. The good news is that they saw improvement overall as a team and also saw some of their prospects stand out. After sitting out the second game, Jared Butler returned and had a nice night. Butler started the game looking much more confident. He was fast and making good reads to set up his teammates all night…