Tim Norris has been the catalyst for the West Hempfield American Legion offense all season.  In fact, in his most recent game Saturday against Latrobe, he went 3 for 5 and helped his team to an 11-10, come-from-behind, eight-inning victory at Lint Field to tie the best-of-three American Legion District 31 playoff series at 1-1 and set up a showdown at 5:30 p.m. today at Legion Keener Field.  It's not only what he does at the plate -- though his .477 batting average and .554 on-base percentage and a team-leading .692 slugging percentage are outstanding for any leadoff hitter -- but also his skill at running the bases that makes him such a threat. He leads the team with 17 stolen bases and has scored 21 runs in 18 games.  "He puts constant pressure on the defense," West Hempfield coach Bob Stokes said. "They have to actually adjust to him because they're throwing fastballs to our hitters to even have a chance to throw him out and, because of that, our hitters are getting better pitches to hit."  That speed has helped Norris, 17, move through several tryouts and into the American Legion West Regional All-Star Game on Wednesday at 11 a.m. at Pullman Park in Butler.  American Legion All-Star Games are actually test drills with a simulated game thrown in for good measure. After a brief warm-up period, players begin the day with a timed 60-yard dash and, after the sprints, they take the field for a typical pre-game practice, where they are judged on their fielding ability and situational arm strength.  In his last time out, Norris ran the 60-yard dash in 6.73 seconds. It is Norris' speed that could garner him notice from several of the collegiate and professional scouts in attendance. "He only made it to the second round last year, but he did a lot of work in the weight room and did some speed training because he never broke seven seconds last year," Stokes said. "That's the one thing those scouts look for is speed."  When the preliminaries conclude, the simulated game begins. Each pitcher throws an inning in which he faces seven batters. Even if the hitters make outs, however, they still take first base so scouts can see both how the pitcher holds runners and to test the catchers' arms on throws to second.  Everyone has the chance to bat once as the 28 batters on each side step into the batter's box according to their pre-assigned numbers. Outfielders are first, followed by shortstops, third basemen, second basemen, first basemen, catchers, then pitchers.  At the end, the scouts tabulate their scores and send home half the players at each position while the rest move on to the East-West American Legion All-Star Game on July 25 at Metro Bank Park in Harrisburg. Two years ago, Tim's brother Danny was selected to play in the state game, but that doesn't guarantee Tim will go.  In fact, the two could not be more different players.  "They play different positions, and Tim is more of a leadoff hitter to get on base and put pressure on the defense while Dan drove in key runs and was a big bat in our lineup at shortstop," Stokes said. "They're just different styles of players and one was right-handed (Dan) and the other left-handed."