The Senior PGA Tour leaderboard is available on the Senior PGA Championship Leaderboard page on PGA.com, as of May 2015. The page lists players in order of their ranking, but also offers other sorting options, such as alphabetical sorting.
Site visitors can access the list by visiting PGA.com and clicking Leaderboard and then on SR PGA to view the leaderboard for the Senior PGA Championship.
A number and arrow next to each player's ranking indicates how much it rose or fell during the previous round. His scoring compared to par, score for each round and total score are also on the list. Clicking on a player's name brings up his score for every hole on the most recent round. A link to each player's full scorecard is also available.