Indianapolis Colts have reached half time with a narrow lead over the Tennessee Titans after the hosts scored 10 unanswered points.

Chuck Pagano's side set up a first-quarter score after Andrew Luck threw for 48 yards to TY Hilton at the one-yard line.

Luck then turned to former San Francisco 49ers running back Frank Gore, who powered over for Indianapolis.

Things got worse for the Titans in the second quarter as Marcus Mariota was picked off by Dwight Lowery, who ran 69 yards into the endzone to increase the Colts' lead.

Tennessee responded with a field goal from 38 yards to reduce the arrears.

However, the Titans got to within four points at half time when Mariota atoned for his interception with a pass for Kendall Wright in the endzone.