MLB.com reports Nationals prospect Anthony Rendon was pleased with his effort in the Arizona Fall League after he was limited to 43 games last season due to an ankle injury. Rendon was particularly disappointed with his performance at Double-A Harrisburg, where he hit .162 in 21 games after returning from a long layoff. Rendon hit .338 with 10 doubles and 11 RBI in 22 games in the AFL. "Coming back, I struggled big time," said Rendon, who added playing in the AFL was key to his confidence. "I can't even lie about it. Trying to come back and trying to face all those good pitchers, I felt like I didn't know how to play baseball." The Nationals anticipate the 2011 first-round pick (sixth overall) having a breakout year. "He's not a sexy guy because he's well thought of," Nationals' director of player development Doug Harris said. "But we anticipate a strong year out of Anthony."