Postseason baseball is returning to L. Dale Mitchell Ballpark for the first time since 2010. Oklahoma (37-19 overall, 23-7 Big 12) was announced as one of the 16 regional hosts on Sunday evening with an expectation they will be a top-8 national seed in the NCAA Tournament. Skip Johnson’s crew will find out who the other three teams that will be headed to The Dale in Norman along with their seeding on Monday during the NCAA Tournament Selection Show (11 a.m.). Oklahoma heads into the NCAA Tournament after winning three games last weekend at the Big 12 Tournament in Arlington, Texas. The Sooners…