The phrase "proved skilled" is grammatically correct and usable in written English.
It can be used to describe someone who has demonstrated their abilities or proficiency in a particular skill through their actions or achievements. Example: After months of intensive training, she proved skilled in the art of archery, hitting the bull's-eye every time she released an arrow.
This was an area of good farmland, forests and mineral resources, all of which the Etruscans proved skilled at exploiting.
They have proved skilled only at provoking guffaws at their regular "elections" and fostering the rise of extreme Islamism among populations left with no refuge but religion.
Over the years the European Parliament has proved skilled at acquiring new legislative powers, arguing that it is the body that connects voters democratically with the EU.
To the amazement of his rivals, Trump has proven skilled at outmaneuvering the establishment by presenting himself as the rich man's version of Horatio Alger - something that must annoy rivals like Rubio who really do have humble origins.
Some argue that regulators were effectively duped into complacency by financial institutions skilled at managing the perception of risk (even as they proved less skilled at managing risk itself).
But confidence is not something Europe has proved terribly skilled at instilling.
Casting herself in the Ted Stevens mold, however, she had proved herself skilled at collecting federal earmarks for Wasilla, bringing in twenty-seven million dollars for her small town in three years.
Wasser, 47, a partner at the law firm Wasser, Cooperman & Mandles, has proved so skilled at the game that she is known as Hollywood's "disso queen", for dissolution of marriage.
Dr. Shapiro proved especially skilled at bringing in large gifts from wealthy alumni, like $100 million from the builder Gordon Y . S. Wu primarily for engineering, and $55 million from the insurance company executive Peter B. Lewis, mostly for a new genomics institute and research center.
Stumping alongside Susan B. Anthony and Elizabeth Cady Stanton, Isabella proved a skilled defender of women's rights and was widely credited with lending a genteel and conciliatory quality to meetings of the National Woman Suffrage Association.
Inspired by the Battle of Passchendaele in the first world war, Smith's most significant contribution to 2003's Dance of Death album once again proved how skilled Maiden are at writing songs about war without descending into mawkish sentiment or witless Boy's Own bravado.
