I feel bad about rescheduling this date. What should I do?

We've been talking for about 2 weeks now. Went on our first date (dinner and then drinks on the beach), second date was today (movie... first kiss). Since our first date we've been planning on going to a baseball game Wednesday. I'm going to buy the tickets but when I went to buy the tickets I thought I may not be able to make it.

The game is at 4:10pm. I'm in school and may or may not get out in time to go pick her up and head to the stadium. She loves baseball and we have been looking forward to going for a few days now.

i feel bad about canceling and having to reschedule the date. What should I say and do if I can't make it?

"sorry I won't be able to make it but let's go out on the beach tonight and have some drinks", and then at the beach show her I got tickets for another game?

feeling kinda troubled with this. I really like this girl and don't want to screw it up.
I feel bad about rescheduling this date. What should I do?
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