(CNN)-- Jerry Sandusky's attorney told reporters Tuesday to "stay tuned" to see if his client will testify in a child rape case that has upended Penn State University and its football program.
"You have to wait," attorney Joe Amendola said just before entering the Pennsylvania courthouse and calling witnesses for a second day.
Sandusky, 68, is on trial on 51 counts related to accusations of sexually abusing 10 boys over a 15-year span. The former Penn State defensive coordinator has denied the charges.
His wife testified at the Centre County Courthouse on Tuesday. Dottie Sandusky is not accused of having witnessed the alleged sexual abuse, but she knew several of the alleged victims.
Her testimony Tuesday marks the first time she has appeared at the trial.
While many of the alleged victims testified that they knew Dottie Sandusky, she is not accused of having witnessed sexual abuse.
NBC News, after being subpoenaed by prosecutors, has also provided court officials with transcripts and footage of a Bob Costas interview with Sandusky, according to NBC spokeswoman Amy Lynn.
"I didn't go around seeking out every young person for sexual needs that I've helped," the former coach told the NBC sportscaster in an interview segment that wasn't part of the November 2011 broadcast but has been aired since.
Sandusky said there are likely "many young people who would come forward and say that my methods and what I had done for them made a very positive impact on their life."
If the former coach testifies, those comments could potentially be entered as new evidence. Early in the trial, Amendola implied that Sandusky would take the stand.
Closing arguments could begin as soon as Thursday, with the defense expected to end its case midday Wednesday, followed by the prosecution's rebuttal.
Sandusky routinely "got showers with kids" after working out, and he would say so later, Amendola said Monday. But as the trial nears its end, it remains unclear if Sandusky will speak.
Ron Kuby, a veteran criminal defense attorney who has been following the trial, said there has been a "tsunami of evidence against him" and suggested that the former coach should take the stand.
Sandusky's child sex abuse allegations: In his own words
"Just maybe he can convince one juror to hold out," the lawyer said. "A hung jury, right now, is a lot better than life without parole."
Prosecutors wrapped up their case Monday morning with brief testimony from the mother of one of the alleged victims.
"He gave him clothes, he gave him gifts," the mother of an accuser called Victim 9 testified. "I just wish he'd given him underwear to replace the underwear I could never find in my laundry."
The final prosecution witness testified Monday that her son seemed to suffer from stomach ailments during the time he was visiting Sandusky and sometimes did not want to visit the former Penn State assistant's home.
But she said she did not ask him about any possible abuse and still does not know what happened to him.
"I didn't really want to hear," she said, crying.
The defense then opened its case with a former Penn State coach who testified about Sandusky's stellar reputation in the community.
Richard Anderson said that it was not uncommon for coaches and youths to use the shower at the same time, and that he had never seen anything inappropriate between Sandusky and a child.
The defense called five other witnesses who also said Sandusky had a stellar reputation in the community.
A main focus of the defense's strategy may be to attempt to poke holes in the prosecution's case thus far.
"A lot of people lied," Amendola said last Monday in his opening statement.
Over four days, several people testified that Sandusky forced them to engage in sexual acts with him in various places, including showers in the Penn State coaches' locker room, hotel rooms and the basement of his home.
'Sandusky 8' describe seduction, molestation, betrayal
One told jurors that Sandusky -- whom he met, like many of the accusers, through the Second Mile nonprofit for disadvantaged youths that the ex-coach founded -- had threatened him if he told others about the abuse. Another said Sandusky warned he might send him home from a trip to Texas, where they'd gone to watch a Penn State bowl game.
The defense could challenge the accusers' timetable, questioning if Sandusky could have committed the crimes they claim he did when they say he did.
Amendola is expected to call an expert witness to testify that Sandusky may have histrionic personality disorder, which the National Institutes of Health says describes people who act "in a very emotional and dramatic way that draws attention to themselves."
What is histrionic personality disorder?
The prosecution had earlier presented as evidence what one accuser described as "creepy love letters," written by Sandusky, that they argued were part of "grooming techniques" commonly employed by sexual predators.
Judge John Cleland issued an order Friday allowing a defense motion to offer expert testimony from a psychologist who "will explain that the words, tones, requests and statements made in the letters are consistent with a person who suffers from a Histrionic Personality Disorder."
"The goal of a person suffering from this disorder in writing those letters would not necessarily be to groom or sexually consummate a relationship in a criminal manner, but rather to satisfy the needs of a psyche belabored by the needs of such a disorder," the defense lawyers wrote in their motion.
Sandusky was expected to be examined Sunday by a prosecution psychologist related to the personality disorder defense, according to a source with knowledge of the case. It was not clear if that happened.
On Monday, prosecutors dropped one of the 52 counts against Sandusky because the statute he was charged with wasn't in effect on the date of the alleged incident.
The alleged victim said the incident occurred in 1995 or 1996, but the unlawful contact with a minor statute didn't apply until 1997.