Cologne had the worst possible start on home soil as Jonas Hector's return pass was intercepted by Kramaric, who kept his cool and nutmegged goalkeeper Timo Horn for the opener with only three minutes gone.
Even though Hertha kept their efforts to a minimum, they further extended their lead on 63 minutes as Jhon Cordoba assisted Matheus Cunha, whose low shot made it 3-0.
Marco Cecchinato of Italy labored to beat Britain's Kyle Edmund 3-6, 7-6 (7), 6-2 and is set to meet Serbia's Filip Krajinovic.
The decisive point will be if the reluctant Swiss can set his bunch of youngsters on fire and at the same time close doors at the back.
The Israeli club scored the opening goal in a clever team execution of a free kick from 20 meters in the 30th minute. Instead of shooting on goal, Dutch midfielder Tjaronn Chery produced an impressive pass to Australian striker Nikita Rukavytsya, who passed to midfielder Yuval Ashkenazi for an easy goal.
Sharjah's chances of progressing to the next round now hang on their ability to collect three points in the reverse fixture on Friday.
The top four teams at the end of the qualifying tournament - in which teams play each other twice on a home-and-away basis - will automatically earn a World Cup berth. The fifth-ranked side will advance to a two-legged intercontinental playoff.
In the women's draw, former world no.1 Angelique Kerber, the 15th seed, lost 6-3, 6-1 to the Czech Republic's Katerina Siniakova, who now faces Daria Kasatkina of Russia.
"Yesterday, I ranked third in women's 5,000m, it was like a warm-up for today," she added.
BEIJING, Sept. 20 (Xinhua) -- Olympic 20km race walk champion Liu Hong made her season debut on Sunday, beating world champion Yang Jiayu to win the women's title at the 2020 Chinese Race Walk Championships in Taian, Shandong province.
The platform 'Mes que una mocio (More than a motion)', formed by a group of Barcelona club members, confirmed they had collected 20,731 signatures, comfortably clearing the required 16,520 to trigger the vote.