Rotherham proved there is life after striker Adam Le Fondre as they surged to the top of League Two with three second-half goals against Gillingham.
Striker Danny Kedwell missed two excellent chances for Gillingham in a goalless first period.
Danny Harrison headed Rotherham in front and Lewis Graven raced onto Mark Bradley's pass to make it 2-0.
Gareth Evans completed a comfortable victory, drilling home a cross from Marcus Marshall with 12 minutes to go.
Le Fondre, who scored 24 goals for Rotherham last season, completed his move to the Madejski Stadium prior to kick-off for a fee believed to be around £350,000.
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Rotherham boss Andy Scott told BBC Radio Sheffield:
"It was a good 90 minutes of football. Sometimes you have to battle hard to play in these games.
"In the second half we we totally dominant, played some fantastic football and were solid at the back.
"If you do it simple, it shows you're a good player and we showed that."
Gillingham manager Andy Hessenthaler told BBC Radio Kent:
"We can't believe it but we deserved to lose on our second-half performance. We ran out of ideas.
"In the first half we looked comfortable without creating chances.
"We were never in any danger at half time but goals change games and decisions change games.
"It was clearly our throw but you can't rely on the officials, we have to defend better."