It's fair to add an extra batsman when your batting lineup is missing Sehwag and Yuvraj. But the problem here is that the bowling, even in full strength, is weak. They're clueless when they've got a few things not going their way. In fact, if you weaken your bowling just to strengthen the batting, the bowling may end up failing to the level where even the batting can't rescue them.
How has the bowling failed? The fast bowlers bowled the first 17 overs, gave few runs and picked up 3 wickets. Pathan and Kohli did a good job in containing Pakistan. I don't see what else India could have done. If they had gone in with an extra bowler and given 20 less runs, it wouldn't have mattered as they wouldn't have the batting to get the total any way.
There have been just three wickets taken by the frontline bowlers. Since the time the part-timers (or an under-performing Yusuf) came on, a partnership developed and now they're creaming the bowling.
They didn't contain Pak but came on at the right time to help Pak batsmen settle down and build a partnership when it was needed
They don't even look like chasing 250 and above, at times, even with seven batsmen.
Getting out Yousuf cheaply would be like a miracle. Their batting isn't particularly strong either.
