Wayne Madsen hit a well-made 80 but Leicestershire enjoyed the better of Day One of the first day/night Specsavers County Championship match at The 3aaa County Ground.
Paul Horton remains unbeaten on 48 as Leicestershire closed on 82-0 after Callum Parkinson had earlier taken three wickets to restrict the hosts to 245.
Madsen top scored with 80, which included his 14,000 run across all forms, while Ben Slater hit 46.
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