Ritchie, a first-round selection (No. 10) of the Ducks in the 2014 NHL Draft and No. 35 on NHL.com's ranking of the Top 60 prospects in the League, will likely begin the game on left wing alongside Emerson Etem and Rickard Rakell.
"It's my first game, and I guess there would be nerves," Ritchie told the Ducks website. "It's just like any other game. It's hockey. It should be fun, and it's going to be cool. We've got some great players playing, so it's going to be cool following them on the ice, working hard and having a good game."
Raphael Diaz's attempt to break training camp with the Calgary Flames is off to a good start. He had five shots on goal, a takeaway and four blocked shots in a team-high 23:27 of ice time in the Flames' 3-1 loss to the Edmonton Oilers on Sunday.
"He played very good," associate coach Jacques Cloutier told the Flames website. "He was under control. He moved the puck extremely well. A very simple game, but very effective."
Diaz, 28, has played for three teams in four NHL seasons, most recently with the New York Rangers. He has six goals and 45 points with a minus-5 rating in 145 NHL games, and was invited to Flames camp on a professional tryout.
He said his goal remains the same as it has since training camp started, to make the Blues' decision on whether to keep him or return him to his junior team as difficult as possible.
New York Rangers center Derek Stepan remains day-to-day with a foot contusion sustained while blocking a shot. He was held off the ice Monday prior to the Rangers' preseason opener against the New Jersey Devils at Madison Square Garden.
"It's a day-to-day thing, nothing serious," coach Alain Vigneault told the Rangers website.
X-rays of Stepan taken on Saturday were negative, according to northjersey.com.
Tampa Bay Lightning center Steven Stamkos did not play in a scrimmage Sunday and is questionable to participate Monday, according to Erik Erlendsson of The Tampa Tribune.
Lightning coach Jon Cooper said the plan is to take it easy with Stamkos, who broke his leg in a game against the Boston Bruins last November and had a procedure last month to remove a screw in his surgically repaired right tibia bone.
Los Angeles Kings center Jarret Stoll, who had hip surgery during the offseason, did not practice Sunday and will not play against the Arizona Coyotes on Monday, according to Rich Hammond of the Orange County Register.
Hammond reported Stoll sat out Sunday by design. He also isn't expected to play against the Anaheim Ducks on Thursday or next Sunday.
Ottawa Senators forward Bobby Ryan left a training camp scrimmage Sunday in the second period following a collision with center Kyle Turris behind the net. He was kept off the ice for precautionary reasons and will not play in either of the Senators' preseason games Monday against the New York Islanders in St. John's, Newfoundland, according to the Ottawa Sun.
"It was a broken play," Ryan told the Senators website. "[Turris] was circling one way behind the net and I was circling the other. I think we both had a pretty good head of steam and never saw each other; just took it right in the chin a little bit. It's alarming, I guess, is the right word for it. They were very, very cautious with it and just said let's calm things down right away."
"When I talked to everybody real quickly they said it wasn't worth it to go back out in those conditions. Let's just call it a day and re-evaluate [Monday]."
Introducing the new official NHL App, available for iPhone, iPad and Android smartphones and tablets. A host of new features and improved functionality are available across all platforms, including a redesigned league-wide scoreboard, expanded news coverage, searchable video highlights, individual team experiences* and more. The new NHL App on your tablet also introduces new offerings such as 60fps video, Multitasking** and Picture-in-Picture.
*Available only for smartphones
** Available only for suported iPads