ट्रेनों का सफर, ज़िन्दगी का सफर, रेलफैन दोनों में माहिर

PNR: 613-xxxxxxx
From: Mugal Sarai Jn (MGS)
To : Agra Fort (AF)
Date of Journey: Wed, 09 Jun 2010
Class: AC-2 tier
passenger...
more...

1: confirmed
passenger 2: confirmed
passenger 3: Waitlist# 1 (Booking Status: W/L 1, RLGN)
Can some one please predict the chances of the third passenger's ticket being confirmed? If not likely, what are my options? Should I buy a sleeper seat (still available) just in case?
Thanks for your time.