Smith, who is coming off a season-ending Achilles injury, showed an impressive burst and change of direction to avoid it.
"I can move faster than what people think," Smith said with a laugh.
Smith tore his Achilles tendon on Nov. 1 and hasn't participated in any offseason workouts. In March, Smith said he was confident he would be ready for the start of the regular season. On Sunday, he declined to give a timetable on his return.
"I don't know when I'm coming back," he said. "I just know I have to be able to do something in training camp to be able to play for the season. That's just the way I operate. I can't go from doing absolutely nothing [and] sitting on my butt for all of training camp and then go out there and play."
Smith, 37, the oldest wide receiver in the NFL, played in the softball game at Ripken Stadium. He didn't run, but he jogged between the bases after getting a hit.
The Ravens are banking on his return, especially with wide receiver Breshad Perriman facing a potentially season-ending injury. Ravens general manager Ozzie Newsome said at the NFL combine in February that he expected Smith to be ready for the start of the season.
Smith ranks 11th on the NFL's all-time receiving list with 13,932 yards, and he could finish in the top five if he exceeds 1,195 yards in 2016.
"I'm just taking it one day at a time, allowing my injury to heal and strengthen myself," Smith said. "I'm trying to be methodical and patient, which I'm not any of those. So it's been good. It gives me a different perspective."