“We’re still a bit unsure on where he’s at,” England captain Root told BBC Sport, ahead of the first day.
“We have options, and that is very exciting.
“Regardless of what the conditions and the surface throw at us, we feel like we have all bases covered.”
Pakistan managed to bat out most of the second Day against England, with Shan Masood frustrating Root’s bowlers.
Masood – Pakistan’s No 1 – posted his third successive hundred at Old Trafford, and helped his country to move passed the 300-run mark on Thursday afternoon.
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