By Tzvi Machlin Fresh off his historic first win as head coach of the Indianapolis Colts, interim head coach Jeff Saturday needs to make a tough decision on which quarterback he’ll go with for the rest of the season. But it appears that the decision isn’t as difficult as it appears. Speaking to the media on Wednesday, Saturday made it clear that Matt Ryan is their starter. “Matt Ryan is our starting quarterback,” Saturday said bluntly. Ryan led the Colts to their 25-20 win over the Las Vegas Raiders, ending the team’s three-game losing streak. The former NFL MVP had one of his better games thi…