Found the article regarding Gawn's 2016 first 7 rounds;
http://www.theroar.com.au/2016/05/22/afls-best-ruckman-gawn-naitanui-goldstein/
Another interesting stat regarding HitOuts to advantage I saw recently (but of little benefit to Freo in 2017) was in regards to Fyfe having the highest for Third man up with 41.4% of his HitOuts going to advantage.
They must have changed the stat. Back in about 2010 Sandilands was averaging about 5-6 a game.