The final Big Ten series of the regular season is a pivotal one for Purdue. Greg Goff and his squad are in Des Moines this week for the final three games of the conference slate, hoping to earn a top-four seed in the Big Ten Tournament and avoid playing until Friday, May 22. Purdue enters this weekend with a 35-15 record and an 18-9 mark in Big Ten play, fresh off a three-game sweep of rival Indiana. The Boilermakers are currently in a tie for fourth place and can climb as high as second in the league. If Purdue sweeps Iowa, it will earn a top-four spot in the tournament. A sweep would also help Purdue's chances of earning a spot in the NCAA Tournament field for just the fourth time in program history. So, there's a lot at stake this week as the Boilermakers take on the Hawkeyes. Here's how you can tune in for this week's three-game series between Purdue and Iowa. Purdue coach Greg Goff walks back after talking to an umpire. | Alex Martin/Journal and Courier / USA TODAY NETWORK Game 1: Purdue vs.…