The San Francisco 49ers emerged from the 2013 NFL draft with one of the four wide receivers selected in the fourth round. They could wind up with two of them after moving to sign Chris Harper from the Seattle Seahawks' practice squad, according to ESPN's Adam Schefter. But with Matt Maiocco of saying the Seahawks are making a last-ditch effort to keep Harper, the heated rivalry between these teams figures to get even warmer.Harper did not show enough during training camp and the preseason for the Seattle Seahawks to keep him on their initial 53-man roster.