Ashley Giles backs Joe Root as England captain despite batting struggles

• Giles hoping Chris Silverwood can relieve pressure on Root
• Captain drops out of top 10 Test batting rankingsAshley Giles has accepted the statistics back up the notion that Test captaincy has affected Joe Root’s batting after he dropped out of the world’s top 10 in the latest rankings. But England’s director of cricket is still expecting a turnaround, with Chris Silverwood’s role as head coach the key.Root goes into the second Test against New Zealand on Thu