Williams, who is chasing her 24th Grand Slam title, returned to tennis in March, but failed to achieve any considerable progress in her first tournaments and struggled to regain decent competitive shape. I didn't think I would be doing this just 15 months after. "I had a really tough delivery, and I had to have multiple surgeries and nearly didn't make it, to be honest", Williams said. She went on a half-hour run in which she took the last four games of the first set and took a 3-0 lead in the second.
Prowling the baseline, Williams was aggressive and precise with her groundstrokes, keeping Goerges pinned back and working hard just to remain in rallies.
The 13th seed's resistance crumbled in the following game, though, as she double-faulted to allow Williams to break her to love and claim the opening set.
If she beats Kerber on Saturday, Williams, who first won Wimbledon in 2002, will become the first mother to lift the Venus Rosewater Dish since Goolagong 38 years ago.More news: Tenth boy walks from Thai cave as rescue mission nears end
Ostapenko, seeded 12th at SW19, threw everything at her opponent but was not able to haul herself back into the contest at all.
"I think I was not thinking too much about against who I'm playing", Kerber said this week.
'But as I said in the past couple years, I don't want to limit myself. She won here I don't know how many times. "That shows that she has a lot of respect for me, really going for her shots".More news: U.S. threatens nations over world breastfeeding resolution, shocking health officials
The German attacked the biggest chink in Ostapenko's armour - her second serve, which is weak and ineffectual.
The 23-time Grand Slam singles victor won their semi-final 6-2, 6-4 in just 70 minutes to reach her 10th Wimbledon singles final.
Williams has barely played in the last 18 months having taken a year off to start a family. "So do I", Williams said.
Ostapenko grew increasingly frustrated as she slipped a second break down and, despite hitting back to deny Kerber as she attempted to serve out for the match at 5-1, could not do enough.More news: Prominent local politician among Pakistan's bomb blast victims
However, unforced errors were her downfall and particularly costly given Williams' unerring accuracy and solid service games. "We saw that she improved every single match she's playing here".