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Carlos Osorio, Associated Press
Minnesota Vikings free safety Harrison Smith (22) and strong safety Jamarca Sanford (33) break up a pass intended for Detroit Lions wide receiver Calvin Johnson (81) during the second quarter of an NFL football game at Ford Field in Detroit, Sunday, Sept. 30, 2012.

ALLEN PARK, Mich. — Matthew Stafford and Calvin Johnson were basically unstoppable early last season.

Detroit's dynamic duo connected for two touchdowns in each of the first four games and nine times in five games to lift the team to a 5-0 start.

The Lions are 1-3 this season for many reasons. One of them is that opponents have turned the pair into a dud — Stafford hasn't thrown a TD pass to Johnson yet.

At this rate, it'll be hard for Johnson or Stafford to approach what they did statistically last season.

While Johnson caught 96 passes for a league-best 1,681 yards and 16 TDs, Stafford threw for 41 TDs and 16 interceptions last season. He has three TD passes and four interceptions this year.

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