After Victor Musa equalised 21 minutes from time, the young Reds almost returned from the historic Bloomfield Road ground with a win when Noam Emeran stepped up to take a late penalty after he was fouled by Alex Lankshear.
However, the 88th-minute spot-kick cleared the crossbar, leaving United to settle for a share of the spoils.
The contest kicked off in bright evening sunlight and it was the Seasiders who shone first, going in front through Brad Holmes just before the half-hour mark. The 20 year-old striker fired past Reds goalkeeper Radek Vitek at the second attempt after his initial effort was blocked.