Horton tracked the leading duo in the first half of the race before making his charge in the final 150m.
Eleven-year-old Welsh table tennis player Anna Hursey is set to make Commonwealth Games history.
To watch the 2018 Commonwealth Games live and on the go, download the free 7CommGames app on iTunes or Android. We decided it was time to get it check out last month so I had a few scans done, not thinking much off it.
"Honestly, I really struggled in 2017", she said. "To get a gold medal there, it would be awesome, it would be a dream come true". "Ten thousand people cheering for you is pretty unreal". James Guy of England took the bronze.
"I've raced against Hannah in every meet and I've been second every time".
"It's always tough in a team pursuit getting silver because you just lost the race but after the legs stop hurting we'll let the moment sink in, and realise that what we've accomplished as a team is something to be proud of".
Fellow Australian team mates Jarrod Poort and 2014 Commonwealth Games 200m freestyle gold medalist Thomas Fraser-Holmes were given one-year bans for the same offense.
Under a mostly clear night sky at the 10,000-seat open-air Gold Coast Aquatic Centre, Ruck held off a fast-charging Ariarne Titmus of Australia in the 200-meter freestyle.
Not only did they each win their heats, but Cate Campbell, her sister Bronte Campbell and Shayna Jack were the three fastest qualifiers for the semifinals.
Cate Campbell (24.24 seconds) was quickest, followed by Jack (24.50) and Bronte Campbell (24.87).