There are major changes this week in the latest Radio Iowa/Baseball Coaches Association high school poll.There are three new top ranked teams. At 12-0 Oelwein jumps from third to take over as the new top ranked team in class 3-A. Oelwein coach Steve Sanders says the ranking means little if a team does not live up to it.Vinton Shellsburg is second, West Delaware third. Previously top-ranked Davenport Assumption is fourth and Denison-Schleswig is fifth. Unbeaten at 15-0, Cascade climbs from fifth and is top ranked in 2-A. Center Point Urbana remains second, West Marshall is third, Osage fourth and previously top-ranked Algona-Garrigan is 5th. Lansing Kee is 16-1 and becomes the new top-ranked team in 1-A. Harmony is second, Lynnville Sully is third, Sheffield SCMT is fourth and Newell-Fonda debuts at number five. West Des Moines Dowling remains top ranked in 4-A. Iowa City High is second , while Marshalltown, Sioux City East and Cedar Rapids Washington complete the top five.