1) prevent wicket collapse after a wicket falls. it seems to me that the pithces are not that easy to play on. new batsmen need to take time to settle in.
2) keep the bowling pressure on. if the bowlers are nice and attacking from the beginning, i'm sure BAN can restrict one of the team under 200 or even 150... no j/k
btw, who's relaying these info back to the team?