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Chesterfield fell to a second successive defeat as they lost 1-0 at the Banks's Stadium to Walsall, a second-half strike from Tom Bradshaw enough to beat the Spireites.
Gary Roberts' stop-start beginning to the season stalled again with the midfielder pulling out of Monday's training session after another hamstring tweak.
The Spireites succumbed to a 2-1 defeat in Essex to Colchester United after leading at the break.
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