The Chargers defeated the winless Jacksonville Jaguars 33-14 as Rivers threw for 377 yards and three touchdowns.  Royal caught two of the scoring passes for his second straight two-touchdown game. San Diego extended its winning streak to three. After Jacksonville took a 7-3 lead on a Toby Gerhart 1-yard TD run early in the second quarter, Rivers spotted Royal&#8212;guarded by linebacker Geno Hayes&#8212;who got open for a 47-yard touchdown reception. Jaguars rookie Blake Bortles, making his first start, followed with a scoring pass to Nic Jacobs. Before halftime, Rivers found Royal on third-and-10 as the receiver outran defenders for 43-yard TD pass, staking San Diego to a 17-14 lead. Rivers connected with Floyd on a 24-yard TD pass to open the third quarter, and the Chargers' defense held the Jaguars scoreless in the second half. Cornerback Brandon Flowers and safety Eric Weddle each intercepted Bortles in the second half after the Jacksonville quarterback began the game 13-for-15 with 144 yards. Rivers completed 29 of his 37 passes and had a 130.0 passer rating, his highest ever in a game in which he threw over 31 passes. Keenan Allen established career-highs of 10 catches for 135 yards, and Royal had five receptions for 105 yards, his first 100-yard game with the Chargers. Novak made four field goals. Earlier in the week on Tuesday, the Chargers had made 10 player transactions largely due to injuries. Playing without Mathews and Woodhead, San Diego ran for just 42 yards on 20 carries; the team entered the game averaging a league-low 2.4 yards per carry. "We've got to work on the running game. We'll get better," Chargers head coach Mike McCoy said.
Question: How many points did San Dieao lead by at halftime?
Answer: 3