ARLINGTON, Texas – The Texas Rangers are the highest-scoring team in baseball and they showed that off again Saturday. The Rangers blasted four home runs, racked up 19 hits and routed the Seattle Mariners 16-6 at Globe Life Field to claim another series. The American League West-leading Rangers (37-20) needed just two games to win their fifth consecutive series for the first time since 2018 and get in position to sweep their division rivals. Texas is also off to its best 57-game start ever and it’s easily the earliest in the season the franchise has ever been 17 games over…