SAN JOSE – Timo Werner had played only 13 minutes over the past year at RB Leipzig, and had just arrived in the Bay Area from Germany on Wednesday. So the San Jose Earthquakes just wanted to give their star signing a bit of playing time Saturday against Atlanta United FC. But it didn’t take long for Werner to show why many consider him the biggest signing in club history. Werner had an assist 18 minutes into his debut appearance as the Earthquakes continued their hot start with a 2-0 win over Atlanta Saturday at PayPal Park. “It was a good start,” Werner said, “I think the best would’ve been scoring a goal, but you can’t have everything. That’s why they wanted to bring me here...