2007-08: The blueliner split time between HC Vitkovice's U18 and U20 squads this season. He posted a combined three goals and five assists in 41 contests.
2008-09: Played for Vitkovice in the Czech U20 league. Posted 20 points in 38 games from the back line. Was a key part of the Czech U18 team at the World Championships, recording five points in six games. Drafted by the QMJHL's Prince Edward Island Rocket in the first round (19th overall) of the 2009 CHL Import Draft.
Polasek expressed to Hockey's Future a desire to play in the CHL next season.
Ranked 52nd among European skaters by Central Scouting for the 2009 draft, and 120th overall by ISS (April).
2009-10: In his first QMJHL season, Polasek played in 66 games for the Rocket. He scored 13 goals and added 28 assists for 41 points while also chipping in with 91 penalty minutes. Polasek registered no points in 5 playoff games.
2010-11: Polasek spent time with the AHL's Manitoba Moose after signing a three-year, entry-level contract with the Canucks in April 2011 but did not appear in any games after skating for the QMJHL's P.E.I. Rocket during the season. In 61 games he led all Rocket defensemen in scoring with 7 goals and 32 assists and had an even plus/minus with 59 PMs. In the Rocket's five-game playoff series with Shawinigan he was an even plus/minus with no points and 8 PMs.
2011-12: Polasek skated in 46 of 76 games for Vancouver AHL affiliate Chicago as a 20-year-old in his first season of pro hockey. He scored 1 goal with 8 assists and was plus-eight with 27 penalty minutes. The Wolves finished first in the Midwest Division and lost to San Antonio in overtime of the decisive fifth game in their first round series with the Rampage. Polasek was a healthy scratch during the series with San Antonio as one-time Flyers' prospect Ryan Parent and free agent Brad Hunt, signed to an AHL contract after completing his college career at Bemidji State, were inserted into the Wolves lineup late in the season.
Listed at 6'2, 187 pounds,looks bigger both on and off the ice. The Czech has a hard-hitting, and effective, approach to defense. But his skill should not be overlooked. He skates well, has a hard and accurate slapshot, and makes good reads. Polasek was steady and dependable in his own end and he could quickly read the play and make moves to intercept. Strong on his skates, the 18-year-old has plenty of room to grow.